Application icon appears blank/generic if the loaded event is processing background task

[hermanusb]

Setup for WPF App:

Set Project settings icon location:

After running the wpf app, the icon on the taskbar is blank.

Note this does not occur on Windows 10

Here is a link to an article describing a similar issue after the latest update: https://learn.microsoft.com/en-us/answers/questions/2201775/windows-forms-application-icon-suddenly-shows-as-d

We're trying to fix an issue where the icon randomly disappears though the behaviour is difficult to replicate seeing as this only happens ever so often.

[miloush]

That is not a background task, you are putting main UI thread to sleep, effectively causing the app to hang.

[hermanusb]

@miloush Apologies, I should have added more detail e.g. the fact that it does not exhibit this behaviour on Windows 10.