Dialog contents are failing to render

[brogers5]

Environment

• Operating System: Windows 11 Pro, 22H2, 64-bit, v22621.674
• KeePass Version: 2.52 (installed)

Note Reproducible as far back as v2.47. I haven't tried going back any further since my database's master key depends on the new key file format introduced with this version. Based on my troubleshooting, I do not believe the issue is related to a specific KeePass release.

• Rule Builder Plugin Version: 3.4

Note Reproducible as far back as v2.0. I cannot reproduce with v1.0.

Steps to Reproduce

Note This appears to be intermittently reproducible, but happens more often than not. It's not clear to me what may factor into reproducibility.

1. Open and unlock a database (in my case, protected with both a master password and key file).

With Change Password Dialog

1. Right-click an existing entry.
2. Press the Generate New Password... menu option.

With Edit Rule Dialog

1. Open the Add/Edit Entry dialog and expand the Generate a password menu, or right-click an existing entry.
2. Press the Edit Password Rule... menu option.

Expected Behavior

Dialog contents render without issues.

Actual Behavior

Dialog contents fails to render, which significantly cripples the usability of the plugin:

Other Notes

The issue persists beyond a Plugin Cache clearing and restart of KeePass.

I normally consume this plugin via the Chocolatey package, although I can also reproduce when manually copied to the Plugins directory.

I've tried building from source (with some minor project reference and post-build event modifications to support my environment), and setting some breakpoints around where the dialog forms are initialized. I would think something would be blowing up around here. Interestingly, no exceptions seem to be thrown anywhere I can see.

I suspect the root cause may be an environmental issue with WPF, as I cannot reproduce on another machine. I'm honestly stumped and not sure where to start with further debugging/troubleshooting this one. Any pointers or other ideas would be much appreciated.