Indexing gets re-run for all open tabs when a single tab's file changes

[michaeleisel]

When I make a change in one of my open tabs in VSCode, it runs indexing for other ones too.

Logs
I can only attach a small portion due to confidentiality requirements, with a few ... redactions

I[10:34:43.960] clangd version 18.1.8 (https://github.com/conda-forge/clangdev-feedstock 9a3b848a819cec20e302ce6c5243036d2146d636)
I[10:34:43.961] Features: linux
I[10:34:43.961] PID: 31916
I[10:34:43.961] Working directory: ...
I[10:34:43.961] argv[0]: ...
I[10:34:43.961] argv[1]: --header-insertion=never
I[10:34:43.961] argv[2]: --compile-commands-dir=...
I[10:34:43.961] argv[3]: --resource-dir=...
I[10:34:43.961] argv[4]: --background-index=false
I[10:34:43.961] Starting LSP over stdin/stdout
I[10:34:43.961] <-- initialize(0)
I[10:34:43.961] --> reply:initialize(0) 0 ms
I[10:34:43.964] <-- initialized
I[10:34:43.973] <-- textDocument/didOpen
I[10:34:44.001] <-- textDocument/codeAction(1)
I[10:34:44.002] <-- textDocument/documentLink(2)
I[10:34:44.002] <-- textDocument/inlayHint(3)
I[10:34:44.078] Loaded compilation database from ...
I[10:34:44.079] ASTWorker building file ... version 1 with command 

System information
Clangd version (from the log, or clangd --version):

clangd version 18.1.8 (https://github.com/conda-forge/clangdev-feedstock 9a3b848a819cec20e302ce6c5243036d2146d636)
Features: linux
Platform: x86_64-conda-linux-gnu

clangd extension version: v0.1.33
Operating system: Linux RHEL 7.9

[HighCommander4]

Is the file you're editing a header? It's expected that clangd re-parses open tabs which include the header when a header changes (since changing the header may e.g. introduce new diagnostics or fix existing diagnostics in source files that include it).