Bug Report: Plex ignores a previously working .plexignore file

Server Version#: 1.23.6.4881
Player Version#: Web v 4.62.1

I recently performed the “Upgrade matching” option on my library. Previous to this my .plexignore settings were applied. After the “Upgrade matching” process completed, I now see all movies once hidden via .plexignore. I have run a re-scan of the library a few times but no luck. The previously hidden video files still persist.

The file structure looks like this:
Library Root -
.plexignore
Movie 1 (2021) -
ignore -
video file not intended for library
Movie 2 (2021) -
ignore -
video file not intended for library

The content of the .plexignore file is:
\ignore\*
ignore\*
/ignore/*
ignore/*