Mousecursor ignoring window on Bitwig MacOS

I’m havin a weird issue, where the mouse cursor in my VST2 acts like the plugineditor wasn’t there at all. Meaning: If the Bitwig component behind it requests a crosshair, it’ll be a crosshair. As soon as I klick the window everything is normal again, until the mouse leaves the window area, when it starts again.

So far this has only occured on MacOS and in Bitwig.

Frankly, I’m clueless on how to debug this, since the problem seems to be happening on the window. Any help appreciated!