Is wayland support even a femto blip on Zoom's radar ?
They're not the only ones though, this is what most companies call "on any device".
Screen sharing only works on Xorg, and screen scaling doesn't work (so it's super blurry on hidpi).
I've never seen that thumbnail window either -- though I don complain on that item, I prefer not having something like that.
And depends on iBus which breaks keyboard input for me.