graphical glitch while dragging the cursor over the color wheel

[nonameboy]

See attached screenshot. Please help on how to fix. Thanks

[WiemeJarne]

Is there a fix for this issue?

[fkate]

This is written with a very old version of Unity and a lot has changed since then so I wouldn't recommend using it any more.
The issue here in particular might stem from the missing "ZTest [unity_GUIZTestMode]" inside the shaders but that's just guessing since I don't have an environment to test it with atm.

For newer Unity versions I would highly recommend using a VisualElements UI system instead.