Since NixOS 24.05, sway movement keys dont switch screens

Since the NixOS 24.05 upgrade (Sway 1.8.1 → 1.9), my sway movement keys no longer switch between screens, only between windows. Does anyone else also observe this? Unfortunately I cannot clearly attribute it to the upgrade because I switched laptops at the same time.

…and maybe related: When I share my screen with MS Teams in Chromium, it always shares the same screen that Chromium is on, even if I select the other one. While selecting, the UI visually highlights the correct screen.