This is just like it was with blurred sign-in screen. It take long time before MS introduce setting in GPO (Only for Win 10 Pro, Ent, Edu) to switch off that feature. Workaround for Home users is turn off transparency effect, which turn off all transparency or use regedit.
For this blurred sign-in screen and now for this new animation effect should have own on/off switches somewhere in Settings / Personalization.