I am so sorry to hear that you are experiencing a problem with our controls. I tried to reproduce the unwanted behavior on my side with Telerik version 2022.2.510.40 and I don't see a problem. I am sending you a sample project with RadGridView and a RadColorBox which on my side works fine.
Try to open it on your side and see if there are some differences. If the problem is still there don't hesitate to write back.
Regards,
Maria
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I fear that the upgrade issue (then bug) described in another post has extended impact. I've downloaded and decompressed your solution. Visual Studio 2019 opens when I double-click on it but...
Maybe I have to wait for the patch resolving the upgrade issue?
I am sorry that the project I send you doesn't work right. I have updated the attached project. The .sln file is messed up. Now everything should work as expected.
Give it a try and let me know if this works for you.