Control box doesn't work

[oliverstech]

I found that the control box on one of my Forms isn't doing anything, not even calling FormClosing, however disabling MaterialSkin Form style it works fine.

https://user-images.githubusercontent.com/89639839/185200086-9486dabe-9b03-40b7-86f5-f700d783d678.mp4

Edit: Sometimes it will work on other forms, but on some, even with the same settings/border config, it doesn't.