Bug: Crash when I move the "repeat last bar" sign into my custom palette

I use MacOS 13.1 and the newest MuseScore 4 version. I can move the tool "repeat last bar" into other categories, just not into my own custom palette. When I move the tool in between other tools in my custom palette, it just disappears again. When I move it to the end of my palette, MuseScore instantly crashes every time with every file.
I have attached my palette.