Mouse pointer scaling issue with Wayland

I’m running Bionic under Wayland (with Communitheme). I see this on multiple devices, all of which are High DPI (4k).

Basically, the cursor seems to lose its scaling when hovering over a running a snapped app:

I have the same problem (I use snapped LibreOffice) with Ubuntu Cosmic using standard GNOME and Xorg.

This is already being discussed in another thread.