Right click menu causes rendering glitches
Right click -> Copy or Paste can cause rendering glitches such as freeze of the whole main view (can be fixed by opening a header bar menu) or leftover selection rendering.
Fedora 33, Wayland, chergert/gnome-text-editor@7fa74d31b102cd6519d389030f001e6437ebe072 running within Builder in flatpak.