Moving Keyframes not stored in the undo buffer

What is your operating system?
windows 64bit

What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?

Can you repeat the problem? If so, what are the steps?
Try moving a keyframe and then undoing it.

This is not really a bug as it is simply not implemented along with all actions around filters. That is just a limitation at the moment and already on the roadmap with some work done.