Screen share on slack - mouse pointer missing

I don't know if this is something on my system (pop os) or if it depends on how I installed slack (Deb package from their website), but when I share screen, I always get the screen selection twice, which I'm used to, but also the mouse pointer doesn't show at all, which makes my life harder.

Is there any way around this? Is something broken or missing from cosmic or from popOS?