Hi collar-significance,

It sounds like the Take System is enabled, and you are not working in the Main Take.

This is often the case when an FBX is loaded and the import "alert" is clicked without reading it.

If that happens even in a new project file, please animate a cube and share that file.

So I can take a look at it.

Otherwise, please get in touch with tech support
https://www.maxon.net/en/support-center

All the best