"redo" is grey

Thx for your answer! and of course, here all details:

• Issue: redo is not available, greyed out
• Adobe Premiere Pro version number: 25.2 Premiere Pro (beta, see down below)
• Operating system - Sequoia 15.2
• System Info: CPU, GPU, RAM, HD:
• M4 Max, 40GPU
• 1TB, 200Gb free disc space
• External project USB-C drive: 4TB, 40GB free
• 48GB Ram
• Sony XAVC-I 4:2:2 10-bit. 
• 1 Interview, 2,5h length, 2 Cameras

OK, I ve tested around and watched the „protocol“ and some confusing pattern: First - in Premiere Pro 25.1 everything works fine.
Due to new Color management I was constantly working in 25.2 Beta (and all beta before last year) and apparently if e.g. I insert a cut, in protocol it creates 1-3 entries: either just „razor“ or two times razor plus one „set feature“ (Eigenschaft festlegen“ in German), which was annoying me a lot already because you sometimes had to randomly push „undo“ 1, 2 or 3 times depending on what Premiere is creating in protocol for same just one click - action. And this brings me to my „redo“ question: in 25.1 everything works fine. But in recent 25.2 Beta (and at least many betas before) it deletes the protocol after I pushed „undo“ afterwards. So there is nothing anymore to redo.

So my new question now is: Is that a big „normal“ disadvantage of Beta versions or is this just happening in my case?