workspace search (search.exclude) glob not correctly matching all .txt files

[aplotor]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.62.3
• OS Version:
  

Steps to Reproduce:

1. "search.exclude": {"**/*.txt": true}
2. workspace search does not exclude txt files starting with "# " (e.g., "# filename.txt")

edit: it seems this only happens if the excluded file is also open somewhere in the editor. not sure if this is expected behavior, but i think it would be better to have an option to adhere to the search.exclude settings regardless of whether an excluded file is open or not.

[gjsjohnmurray]

edit: it seems this only happens if the excluded file is also open somewhere in the editor

/duplicate of #31819 and is mentioned at https://github.com/microsoft/vscode/wiki/Search-Issues#search-including-too-many-results