How to reproduce:
1. Open the attached "IN-125133_Flexible Blur 6.3 Bug.zip" project
2. Open the "Bug" scene
3. In the Hierarchy, under Canvas -> Grid select either "BlurredImage (editor interaction causes flickering)" or "Image (ditto)" GameObjects
4. With the GameObject selected, try to hover mouse over Inspector or interact with it in any way (click anything, change values...)
5. Observe the Scene View
Actual result: The UI elements in scene view flicker, disappear, get stretched/smeared
Expected result: No flickering is caused by interacting with the Inspector
Reproducible with: 6000.3.0a1, 6000.3.2f1, 6000.4.0a3
Not reproducible with: 6000.0.64f1 (5360b7cd7953), 6000.2.0b2 (d4c40f50eb81)
Could not test with: 6000.4.0a4, 6000.4.0b2, 6000.5.0a3 (script errors that corrupt the UI)
Reproducible on: Windows 11
Not reproducible on: No other environments tested
Note: This issue appears if the selected GameObject has a built-in Image or custom Blurred Image component from a package in the project, and is also caused by Raw Image component