I just discovered that the Target Selector works correctly forcing x11 in a Wayland session: just start the ide prepending the GDK_BACKEND=x11 directive.Hope this helps someone !

Hello all, I'm using Fedora 29, and the STM32 Target Selector windows is blank if I use the Gnome on Wayland session, but it draws correctly if I use Gnome on XOrg or Gnome Classic session. The same happens with the newly released Fedora 30.I hope so...