Unity 6.3 Crashs after clearing pose editor gameobject

UMotionPro Crash.mp4
Hello its me again you suggest that i open a bug report here.
As the video shows when i clear the "Select a GameObject to animate" field untiy crashes within seconds. never happens when i use unity normally.
I tried to create a new project and tested it with a random huminoid mesh but this time with no crashes so am assuming its something in my project or the Complex GameObject am using (i tried reinstalling umotion pro and i still experiance the sudden crash after clearing the pose editor object).

Update: so i asked chatgpt to read the crash log and this is what he said:
https://chatgpt.com/share/6a7f8626-1374-83eb-8624-2aab06c5801f
UMotion appears to iterate through renderers on the selected GameObject and attempts to modify sharedMaterials on a VFXRenderer. Immediately before the crash, the Editor.log reports:

It is not allowed to set the material of a VFXRenderer. This method has no effect.

The stack trace points to UMotionEditor.Control.UMotionLock.

Shortly afterward, Unity reports:

Resolve of invalid GC handle. The handle is from a previous domain.

and crashes in the VFX system during VFXParticleSystemBatchData / VFXBatch cleanup.

Removing/excluding Visual Effect Graph objects from the hierarchy used by UMotion appears to be related to the issue.