nginx-proxy-manager: rewrite directive is no longer working

Checklist

• Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image?
  • Yes
• Are you sure you’re not using someone else’s docker image?
  • Yes
• Have you searched for similar issues (both open and closed)?
  • Yes

Describe the bug

the rewrite directive has no effect when put into the advanced tab for example
rewrite ^/about$ /preferences last; this works on LSIO SWAG, but doesn’t work on NPM.

this issue started around the beginning of November, maybe something changed in OpenResty ? or a regression in v2.9.11+ ?

Nginx Proxy Manager Version

v2.9.12

To Reproduce Steps to reproduce the behavior:

1. Go to ‘any proxy host’
2. Click on ‘advanced’
3. put a rewrite directive like rewrite ^/about$ /preferences last;
4. test it and it won’t work.

Expected behavior

the rewrite directive should work, and rewrite URLs as instructed.

Screenshots

Operating System

Debian 11/docker

Additional context