shortcuts for Stretch layout are not working as they should

Hi
Some of my keyboard shortcuts seems to have been corrupted. I posted a question about this some time ago, but haven't followed up, and haven't heard anything. Now the issue has escalated a bit. First the the shortcut for Reset stretch layout (=) didn't work at all. After fiddling a little with customizing these shortcuts I became used to some settings on my swedish keyboard, and increasing and decreasing worked, but never Reset. Recently I changed from Windows to Mac and for some reason my custom shortcuts has followed along (See screenshot). I used to save my scores and settings to Icloud for Windows, I guess that has something to do with it. But now they are not working at all, despite factory reset of both settings and entire Musescore. I can set them to something else end then it works, but if I reset the settings they revert to my old ones, not the default, "{" and "}"
Thanks