1.21-1.21.1 Elytra false positive

[Imptovskii]

Complete output of the ncp version command (please prefer text here)

[00:13:22 INFO]: »Version information«
[00:13:22 INFO]: Server:
[00:13:22 INFO]: 1.21.1-26-52ae4ad ~MC: 1.21.1~
[00:13:22 INFO]: Detected: 1.21.1
[00:13:22 INFO]: NoCheatPlus:
[00:13:22 INFO]: Plugin: 3.17.1-SNAPSHOT-Updated-b192
[00:13:22 INFO]: MCAccess: 1.13-1.21|? / Bukkit-API
[00:13:22 INFO]: Features:
[00:13:22 INFO]: blocks: BlocksMC1_4, BlocksMC1_5, BlocksMC1_6_1, BlocksMC1_7_2, BlocksMC1_8, BlocksMC1_9, BlocksMC1_10, BlocksMC1_11, BlocksMC1_12, BlocksMC1_13, BlocksMC1_14, BlocksMC1_15, BlocksMC1_16, BlocksMC1_17, BlocksMC1_19, BlocksMC1_20, MCAccessBukkitModern
[00:13:22 INFO]: checks: FastConsume, Gutenberg, HotFixFallingBlockPortalEnter, AttackFrequency, FlyingFrequency, KeepAliveFrequency
[00:13:22 INFO]: defaults: pvpKnockBackVelocity
[00:13:22 INFO]: packet-listeners: UseEntityAdapter, MovingFlying, OutgoingPosition, KeepAliveAdapter, SoundDistance, WrongTurnAdapter, NoSlow, Fight
[00:13:22 INFO]: Hooks:
AllViolations~NCP~ 1.0, ViolationFrequency~NCP~ 1.0
[00:13:22 INFO]: »Related Plugins«
[00:13:22 INFO]: ProtocolLib v5.3.0-SNAPSHOT-726, ViaVersion v5.0.3

Short description of the issue and how to reproduce (is it random / always happens / side conditions ?)

When flying on elytra, we can get the random stopping of flying. This interferes with normal play

Have you made any (noteworthy) changes to the default configuration of NCP?

No

Do you run any other special plugins that affect game mechanics next to NC+ (skills, machines, adding/changing blocks, other anti-cheating)?

No

Provide additional information: for bypasses, vulnerabilities and reproducible issues, we request a debug log. Use GitHub gists or PasteBin or similar for errors and huge logs, or attach a (zip-) file here.

elytra.txt
https://www.youtube.com/watch?v=Zk04qqXL5fY

[Chevels]

Hello !

If you prefer that I create a new issue, let me know and I will delete my comment.
Same here, but even in deactivating creativefly check and /ncp reload problem still persist and player can't use elytras.
The check is completely disabled in config:

moving:
    active: true
        creativefly:
          active: false

...I restarted the server but players still can't fly in elytras and I constantly have this message:
[NC+] ******* failed CreativeFly: tried to perform a move that deviates from the model (Model: jetpack.elytra, Tags: hfrict+bunnyhop+e_vasc+e_vdiff+e_hspeed+hdist+vdist) (VL942)

As it stands I will have to remove ncp because my players simply cannot fly in elytras, or in a very complicated way 😕

Complete output of the ncp version command (please prefer text here)
[11:39:25 INFO]: »Version information«
[11:39:25 INFO]: Server:
[11:39:25 INFO]: 1.21-124-df3b654 MC: 1.21
[11:39:25 INFO]: Detected: 1.21
[11:39:25 INFO]: NoCheatPlus:
[11:39:25 INFO]: Plugin: 3.17.1-SNAPSHOT-Updated-b192
[11:39:25 INFO]: MCAccess: 1.13-1.21|? / Bukkit-API
[11:39:25 INFO]: Features:
[11:39:25 INFO]: blocks: BlocksMC1_4, BlocksMC1_5, BlocksMC1_6_1, BlocksMC1_7_2, BlocksMC1_8, BlocksMC1_9, BlocksMC1_10, BlocksMC1_11, BlocksMC1_12, BlocksMC1_13, BlocksMC1_14, BlocksMC1_15, BlocksMC1_16, BlocksMC1_17, BlocksMC1_19, BlocksMC1_20, MCAccessBukkitModern
[11:39:25 INFO]: checks: FastConsume, Gutenberg, HotFixFallingBlockPortalEnter, AttackFrequency, FlyingFrequency, KeepAliveFrequency
[11:39:25 INFO]: defaults: pvpKnockBackVelocity
[11:39:25 INFO]: packet-listeners: UseEntityAdapter, MovingFlying, OutgoingPosition, KeepAliveAdapter, SoundDistance, WrongTurnAdapter, Fight
[11:39:25 INFO]: Hooks:
AllViolationsNCP 1.0, ViolationFrequencyNCP 1.0
[11:39:25 INFO]: »Related Plugins«
[11:39:25 INFO]: ProtocolLib v5.3.0-SNAPSHOT-726, ViaVersion v5.0.4-SNAPSHOT

Short description of the issue and how to reproduce (is it random / always happens / side conditions ?)
Players are very often stopped in mid-flight and then fall, some players cannot even take off using rockets

Have you made any (noteworthy) changes to the default configuration of NCP?
I use Mark's config since several years.
To trying to avoid this issue a try to entirely disable CreativeFly check:

moving:
    active: true
    creativefly:
      active: false

But that didn't change anything...
So I tried to increase the tolerance of the check by changing the maximum speeds:

        elytra:
          horizontal:
            speed: 999999
            modsprint: 1.0
          vertical:
            ascend:
              speed: 999999
            maxheight: 767
          modifiers: true
          resetFwOnground: false
          strict: false

But fails too. NCP seems not to take into account the changes in the config :/

Do you run any other special plugins that affect game mechanics next to NC+ (skills, machines, adding/changing blocks, other anti-cheating)?

• AntiCheatAdditions
• GrimAC
• Orebfuscator
  But for years it has never been a problem.

Provide additional information: for bypasses, vulnerabilities and reproducible issues, we request a debug log. Use GitHub gists or PasteBin or similar for errors and huge logs, or attach a (zip-) file here.

2024-08-20_13-26-52.1.mp4

2024-08-20_13-14-20.1.mp4