Minecraft 1.16.221 unplayable... hangs towards end of loading prevously created world.

[RetroSoftwareRepository]

Game version: x86_32, macOS version 10.11.6 (El Captain)
Here's the output of the log upon force quitting the game:

16:32:15 Info [Launcher] Version: client 992db17 / manifest 8cae128
16:32:15 Info [Launcher] CPU: GenuineIntel Intel(R) Xeon(R) CPU 5150 @ 2.66GHz
16:32:15 Info [Launcher] CPU supports SSSE3: YES
16:32:15 Trace [Launcher] Loading hybris libraries
16:32:15 Trace [REDIRECT] /data/data/com.mojang.minecraftpe to /Users/alexmckeever/Library/Application Support/mcpelauncher/
16:32:15 Trace [REDIRECT] /data/data/Applications/Minecraft Bedrock Launcher.app/Contents/proc/901/cmdline to /Users/alexmckeever/Library/Application Support/mcpelauncher/
16:32:15 Trace [REDIRECT] /data/data/Applications/Minecraft Bedrock Launcher.app/Contents/MacOS/./mcpelauncher-client32 to /Users/alexmckeever/Library/Application Support/mcpelauncher/
16:32:15 Trace [REDIRECT] /data/data to /Users/alexmckeever/Library/Application Support/mcpelauncher/
16:32:15 Trace [HybrisUtils] Loaded OS library libm.dylib
16:32:15 Trace [HybrisUtils] Loaded OS library libz.dylib
16:32:15 Warn [FMOD] Failed to load host libfmod: 'Fmod removed i386 support, after deprecation by Apple', use experimental pulseaudio backend if available
load_library: Undefined symbol glMultMatrixf
load_library: Undefined symbol glFogf
load_library: Undefined symbol glFogfv
load_library: Undefined symbol glColorPointer
load_library: Undefined symbol glVertexPointer
load_library: Undefined symbol glOrthof
load_library: Undefined symbol glRotatef
load_library: Undefined symbol glScalef
load_library: Undefined symbol glDisableClientState
load_library: Undefined symbol glPopMatrix
load_library: Undefined symbol glTranslatef
load_library: Undefined symbol glColor4f
load_library: Undefined symbol glLightModelf
load_library: Undefined symbol glAlphaFunc
load_library: Undefined symbol glVertexAttribPointer
load_library: Undefined symbol glVertexAttrib3fv
load_library: Undefined symbol glVertexAttrib3f
load_library: Undefined symbol glVertexAttrib2fv
load_library: Undefined symbol glVertexAttrib1fv
load_library: Undefined symbol glValidateProgram
load_library: Undefined symbol glUseProgram
load_library: Undefined symbol glUniformMatrix4fv
load_library: Undefined symbol glUniformMatrix3fv
load_library: Undefined symbol glMatrixMode
load_library: Undefined symbol glUniformMatrix2fv
load_library: Undefined symbol glUniform4fv
load_library: Undefined symbol glUniform3iv
load_library: Undefined symbol glUniform3fv
load_library: Undefined symbol glUniform2fv
load_library: Undefined symbol glUniform1iv
load_library: Undefined symbol glUniform1i
load_library: Undefined symbol glUniform1fv
load_library: Undefined symbol glTexSubImage2D
load_library: Undefined symbol glTexParameteri
load_library: Undefined symbol glUniform3f
load_library: Undefined symbol glTexParameterf
load_library: Undefined symbol glStencilOpSeparate
load_library: Undefined symbol glStencilMask
load_library: Undefined symbol glLightfv
load_library: Undefined symbol glStencilFunc
load_library: Undefined symbol glShaderSource
load_library: Undefined symbol glUniform1f
load_library: Undefined symbol glShaderBinary
load_library: Undefined symbol glHint
load_library: Undefined symbol glScissor
load_library: Undefined symbol glGetBufferParameteriv
load_library: Undefined symbol glRenderbufferStorage
load_library: Undefined symbol glReadPixels
load_library: Undefined symbol glPixelStorei
load_library: Undefined symbol glDeleteTextures
load_library: Undefined symbol glIsBuffer
load_library: Undefined symbol glLineWidth
load_library: Undefined symbol glIsEnabled
load_library: Undefined symbol glGetVertexAttribiv
load_library: Undefined symbol glGetUniformLocation
load_library: Undefined symbol glGetTexParameteriv
load_library: Undefined symbol glGetVertexAttribPointerv
load_library: Undefined symbol glViewport
load_library: Undefined symbol glGetTexParameterfv
load_library: Undefined symbol glIsTexture
load_library: Undefined symbol glGetString
load_library: Undefined symbol glCopyTexImage2D
load_library: Undefined symbol glIsProgram
load_library: Undefined symbol glVertexAttrib4fv
load_library: Undefined symbol glGetUniformiv
load_library: Undefined symbol glUniform3i
load_library: Undefined symbol glGetShaderPrecisionFormat
load_library: Undefined symbol glGetShaderiv
load_library: Undefined symbol glGetRenderbufferParameteriv
load_library: Undefined symbol glGetProgramiv
load_library: Undefined symbol glShadeModel
load_library: Undefined symbol glGetIntegerv
load_library: Undefined symbol glGetFloatv
load_library: Undefined symbol glUniform2i
load_library: Undefined symbol glGetError
load_library: Undefined symbol glGetBooleanv
load_library: Undefined symbol glVertexAttrib4f
load_library: Undefined symbol glGetAttribLocation
load_library: Undefined symbol glGetActiveUniform
load_library: Undefined symbol glTexParameteriv
load_library: Undefined symbol glGetActiveAttrib
load_library: Undefined symbol glStencilMaskSeparate
load_library: Undefined symbol glGenRenderbuffers
load_library: Undefined symbol glCompressedTexSubImage2D
load_library: Undefined symbol glGetProgramInfoLog
load_library: Undefined symbol glDeleteShader
load_library: Undefined symbol glGenBuffers
load_library: Undefined symbol glSampleCoverage
load_library: Undefined symbol glGenTextures
load_library: Undefined symbol glGetVertexAttribfv
load_library: Undefined symbol glUniform4iv
load_library: Undefined symbol glFrontFace
load_library: Undefined symbol glPushMatrix
load_library: Undefined symbol glUniform2iv
load_library: Undefined symbol glIsShader
load_library: Undefined symbol glBindFramebuffer
load_library: Undefined symbol glFramebufferTexture2D
load_library: Undefined symbol glUniform4i
load_library: Undefined symbol glClearStencil
load_library: Undefined symbol glDeleteRenderbuffers
load_library: Undefined symbol glFinish
load_library: Undefined symbol glBlendFuncSeparate
load_library: Undefined symbol glBindAttribLocation
load_library: Undefined symbol glClear
load_library: Undefined symbol glEnableVertexAttribArray
load_library: Undefined symbol glStencilFuncSeparate
load_library: Undefined symbol glPolygonOffset
load_library: Undefined symbol glDisable
load_library: Undefined symbol glDetachShader
load_library: Undefined symbol glReleaseShaderCompiler
load_library: Undefined symbol glCompressedTexImage2D
load_library: Undefined symbol glBindRenderbuffer
load_library: Undefined symbol glDepthMask
load_library: Undefined symbol glIsFramebuffer
load_library: Undefined symbol glGetUniformfv
load_library: Undefined symbol glUniform4f
load_library: Undefined symbol glAttachShader
load_library: Undefined symbol glLoadIdentity
load_library: Undefined symbol glFramebufferRenderbuffer
load_library: Undefined symbol glStencilOp
load_library: Undefined symbol glDisableVertexAttribArray
load_library: Undefined symbol glIsRenderbuffer
load_library: Undefined symbol glDeleteProgram
load_library: Undefined symbol glDrawArrays
load_library: Undefined symbol glBlendEquationSeparate
load_library: Undefined symbol glCompileShader
load_library: Undefined symbol glVertexAttrib1f
load_library: Undefined symbol glDeleteFramebuffers
load_library: Undefined symbol glDeleteBuffers
load_library: Undefined symbol glTexParameterfv
load_library: Undefined symbol glLinkProgram
load_library: Undefined symbol glGenerateMipmap
load_library: Undefined symbol glCullFace
load_library: Undefined symbol glEnableClientState
load_library: Undefined symbol glVertexAttrib2f
load_library: Undefined symbol glTexImage2D
load_library: Undefined symbol glDrawElements
load_library: Undefined symbol glGenFramebuffers
load_library: Undefined symbol glCreateShader
load_library: Undefined symbol glGetFramebufferAttachmentParameteriv
load_library: Undefined symbol glClearColor
load_library: Undefined symbol glCreateProgram
load_library: Undefined symbol glClearDepthf
load_library: Undefined symbol glBlendFunc
load_library: Undefined symbol glBindBuffer
load_library: Undefined symbol glGetShaderInfoLog
load_library: Undefined symbol glCheckFramebufferStatus
load_library: Undefined symbol glBufferSubData
load_library: Undefined symbol glNormalPointer
load_library: Undefined symbol glActiveTexture
load_library: Undefined symbol glFogx
load_library: Undefined symbol glColorMask
load_library: Undefined symbol glBufferData
load_library: Undefined symbol glDepthFunc
load_library: Undefined symbol glFlush
load_library: Undefined symbol glTexCoordPointer
load_library: Undefined symbol glCopyTexSubImage2D
load_library: Undefined symbol glGetAttachedShaders
load_library: Undefined symbol glDepthRangef
load_library: Undefined symbol glBlendEquation
load_library: Undefined symbol glGetShaderSource
load_library: Undefined symbol glEnable
load_library: Undefined symbol glBlendColor
load_library: Undefined symbol glUniform2f
load_library: Undefined symbol glBindTexture
16:32:15 Trace [Launcher] Loading Minecraft library
16:32:15 Info [Launcher] Loaded Minecraft library
16:32:15 Debug [Launcher] Minecraft is at offset 0x0x6440000
16:32:15 Info [Launcher] Game version: 0.0.0.0
16:32:15 Info [Launcher] Applying patches
16:32:15 Debug [CorePatches] Failed to patch, vtable _ZTV21AppPlatform_android23 not found
16:32:15 Trace [Patch] Patching - original: 85 83 87 86 131
16:32:15 Trace [Patch] Patching - result: 233 123 33 231 244
16:32:15 Error [SplitscreenPatch] Not patching splitscreen - incompatible code
16:32:18 Info [Launcher] Initializing JNI
16:32:18 Error [JniSupport] Missing native symbol: Java_com_mojang_minecraftpe_MainActivity_nativeRegisterThis
16:32:18 Error [JniSupport] Missing native symbol: Java_com_mojang_minecraftpe_MainActivity_nativeUnregisterThis
16:32:18 Error [JniSupport] Missing native symbol: Java_com_microsoft_xal_browser_WebView_urlOperationSucceeded
16:32:18 Info [Launcher] Executing main thread
16:32:18 Trace [Minecraft] Entering JNI_OnLoad 0xb031d000
16:32:18 Trace [Minecraft] JNI_OnLoad completed
16:32:18 Trace [JniSupport] Invoking nativeRegisterThis
16:32:18 Trace [JniSupport] Invoking ANativeActivity_onCreate
16:32:18 Warn [Main] Android stub called
16:32:18 Warn [Main] Android stub called
16:32:18 Warn [Main] Android stub called
16:32:18 Warn [Main] Android stub called
16:32:18 Info [Launcher] Loading gamepad mappings
16:32:18 Trace [Launcher] Loading gamepad mappings: /Applications/Minecraft Bedrock Launcher.app/Contents/Resources/mcpelauncher/gamecontrollerdb.txt
16:32:18 Info [Launcher] Creating window
16:32:22 Trace [JniSupport] Invoking start activity callbacks
16:32:22 Info [Minecraft] android_main starting. internalDataPath is '/internal', externalDataPath is '/external'
16:32:22 Info [Minecraft] NO LOG FILE! - AppPlatform_android::setStorageDirectory - using External dir - CurrentFileStoragePath is now '/Users/alexmckeever/Library/Application Support/mcpelauncher/'
16:32:22 Error [MCPE] *** setCachedDeviceId(0d9c2de1-7896-49f9-8962-b5897c6c0784)
16:32:22 Warn [Main] Android stub called
16:32:22 Warn [Main] Android stub called
16:32:22 Warn [Minecraft] NO LOG FILE! - [Device Lost] The graphics context was gained
16:32:22 Warn [Minecraft] MinecraftGame::init && MinecraftGame::setSize!
16:32:23 Debug [HttpCallStaticGlue] Successfully registerered HttpCall methods
16:32:23 Debug [XboxLiveAppConfig] Successfully registerered XboxLiveAppConfig methods
16:32:23 Debug [XSAPI.Android] Successfully registerered HttpCall tcuiMethods
16:32:23 Debug [XSAPI.Android] Successfully registerered telemetryMethods
16:32:58 Info [Minecraft] NO LOG FILE! - opening /Users/alexmckeever/Library/Application Support/mcpelauncher/games/com.mojang/minecraftWorlds/nLJsYKasBAA=/db
16:33:00 Info [Minecraft] NO LOG FILE! - IPv4 supported, port: 19132
16:33:00 Info [Minecraft] NO LOG FILE! - IPv6 supported, port: 19133
16:33:01 Info [Minecraft] NO LOG FILE! - Player connected: ComputerJunkie2, xuid: 2535454161165164
16:47:44 Trace [JniSupport] Invoking stop activity callbacks

Process exited with unexpected exit code: 15

[RetroSoftwareRepository]

Creating a new world results in the same issue.