User defined theme that worked until the version 3.5.2 fails in 3.6.16051, pre-release

[JosepBalague]

SumatraPDF version

• Version 3.6.16051, pre-release

Describe the bug
I'm visual impaired and I use an user defined theme in Windows 11 23h2. I can't use the Windows dark theme because I can't see it well.

This theme were compatible with previous versions of Sumatra but it is not compatible with this pre-release. Menus are not shown.

To Reproduce
Steps to reproduce the behavior:

1. Install attached theme
   theme.zip

2. Go to Settings, accessibility, contrast themes:
   

3. Go to Sumatra and expand File menu and see the bug:
   

Expected behavior
Same behavior than previous versions:

File that reproduces the problem

Screenshots

Additional context

[GitHubRulesOK]

I dont know if its the version of Windows (I use 10) or the version your using however I dont get the same result.

Ensure you are using the best choice of settings But Windows is often changing themed support and There have been several theming related recent changes in SumatraPDF, so it may well be that is the cause of differences.