Fast click, drag, release can leave drag template open indefinitely

[robbiehinch]

Describe the bug
Fast click, drag, release can leave drag template open indefinitely.
I've made a suggested fix in this PR: #503

To Reproduce
Very quickly drag and drop a UI element (our application has a quite deeply nested grid layout that perhaps exacerbates the issue).

Expected behavior
The drag template will not disappear after releasing the drag.

Desktop (please complete the following information):

• Windows 11

Additional context
I've made a suggested fix in this PR: #503
There is a copy of the output logging I used to diagnose the issue.

[FAMEEXE]

Hi Robbie, do you get an exception before the template hung? We also had this bug, and we were able to fix this. :)

[robbiehinch]

Hi Robbie, do you get an exception before the template hung? We also had this bug, and we were able to fix this. :)

I wasn't getting an exception. To me it seemed the issue is caused because the DragEnter event only bubbles into the ui element after the mouse has been released. Have you got a link to your fix/issue, please?

[FAMEEXE]

@robbiehinch we fixed this issue in #502 but the owner of this repo doesn't seem to be active anymore. So we fixed this issue in a fork with our own package:

• Package: https://www.nuget.org/packages/softwaretirol.gong-wpf-dragdrop
• Source: https://github.com/softwaretirol/gong-wpf-dragdrop/tree/ThreadingProblem

May i ask, what version of .NET Framework/.NET are you using?

[punker76]

@FAMEEXE Sorry for delay, I'm active, but have currently some outer space human issues. I saw your PR and will look for it to merge it soon

[robbiehinch]

May i ask, what version of .NET Framework/.NET are you using?

4.8 ftw