Regarding when a WPF application using the "PresentationFramework.Fluent" theme experiences a flashing window in dark mode.

[jcddcjjcd]

I have converted 4 apps with extensive use of windows to PresentationFramework.Fluent and aside from issues already raised I am quite happy with it except that most of the time when Dark Mode windows open there is a brief flash of white before the window is drawn, this is immediately after window.Show() and before the redraw starts.
I haven't seen it mentioned here yet but an AI search describes it and the felling is that this a Windows problem rather than WPF.
This issue is an absolute show stopper as it is very jarring and widespread.
I am running the latest Windows11, an Intel Ultra 9 285k CPU and an Nvidia 4060 GPU so processing speed is unlikely an issue.
Is this widespread and will a solution be found is what I am really asking.
Would anyone like to comment.

[himgoyalmicro]

@jcddcjjcd Can you please provide a sample repro project and if possible, a video of the issue?

[jcddcjjcd]

A small video clip.
https://github.com/user-attachments/assets/a182dd00-4d03-4766-84ca-3abc83a3ed26
I can't post the code here but would consider sending it privately.
This flicker is typical and for some windows constant while others are intermittent perhaps depending on what else is going on in the app or the complexity of the page.