Not really a bug but an inconvenience. Plasma 5.25 has new desktops slide animation which takes 0.5 seconds to play. It's way too slow compared to other animations like desktop grid or present windows (which take ~100-200ms to play). In previous version it was possible to configure slide speed separately from other animations, but not anymore. So if I adjust common animation speed to be twice faster for slide it makes desktop grid/present windows almost instantaneous which looks like no animation at all. It would be nice to increase default slide speed.