Hi, @MintyUltra and @DevelopmentDeadline have access to the place. Can it be done through their access? Thank you
I’m experiencing this too, really frustrating.
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Yep, I know them–I’ll see what I can do. Thank you!
Good news! I’m able to reproduce this on the PS99 place. I will investigate 
One thing I noticed is that when Ctrl+Z doesn’t work, if I click the undo button in the top left, it will work for the rest of the session. Do you observe the same behavior?
Ok, so I may be confused on my repro. My repro ended up just being that the explorer search is focused when I Ctrl+Z. If I just click again to get out of it after duplicating it works. I assume that’s not the case for you?
Great, glad you were able to get on the place.
CTRL+Z and the top left button have the same issue for me.
I am not engaged in explorer search.
Here is an example:
External Mediahttps://streamable.com/27gbnf
It seems for anything I do it seems the history is limited to 3 undos.
Let me know if you want me to test anything specific!
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I noticed this was linked from the OP on a thread about Team Create. Can you repro this WITHOUT Team Create? Non-TC is how I’ve been testing so far
Not sure how or if it is safe to turn off team create on PS99. I don’t know if I have perms and can get everyone to stop working, etc.
Does this happen when it’s only you in the game?
Yeah don’t turn it off, but save the rbxl locally and see if it works there. Don’t need to publish.
Unsure if my issue relates to this, but in number sequences, I’m unable see my undo or redo my. Only after I close and reopen can i see the undo or redo
Okay, we’ve found what causes this. When Roblox Studio starts to hit a certain memory threshold (like in the large PS99 place), it tries to clear out older waypoints, but it looks like that code is not working correctly. We’re working on a fix.
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Any news about this issue being fixed?
I think we have a fix in flight. Should come out either this week or next.
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Hi everyone. We’ve released a change to mitigate this issue and will work to prevent it from happening again. If this issue pops up in your game, please feel free to reach out and we can take a look. Thanks!
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It’s still broken.
This was a ladder model. I deleted it. I pressed ctrl+z (no other actions in-between.)
The ladder is missing most of its parts, and the model is all screwed up.
Cmon!!!
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This is just, so frustrating. I don’t know what else to say.
Ctrl+Z should be a day-0 feature that works out of the box and never fails. Ever. Ever. Ever.
And it doesn’t work a significant portion of the time.
STILL.
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Still has problems. Accidentally deleted an IMPORTANT tool and I can’t undo. 5 minutes of progress is gone, yet could be worse if version history wasnt a thing.
Yep, still got the issue. I just deleted my car which I was making for literally half a day.
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100% not fixed. Happens to me very often, as I use deleting and undoing the delete as a way to check that I have put the right parts into a model or folder.
This is probably part of their new “next gen studio improvements” or whatever bs we didn’t ask for.