Multiple Animation Keyframes cannot be moved.

Effect Controls Panel. Once multiple keyframes are selected, dragging will place them in random increments and not allow control over where they are placed. One or two key frames selected behave normally, after you select three or four it goes haywire.

Version 23.1.0 Build 86. 

Edition Windows 10 Pro
Version 22H2
Installed on ‎11/‎29/‎2022
OS build 19045.2486
Experience Windows Feature Experience Pack 120.2212.4190.0