Thanks for confirming your org name with me over DM. I wasn't able to find any relevant logs that could point us to what caused this issue. I'm sorry you have lost your progress multiple times, it must have been frustrating!
Here is some context on what could have caused this, how to prevent it from happening in the future, and how to recover your work if it ever happens again:
Don't make any changes when using the 'historyOffset,' as this can lead to losing previous app states.
I found another report from today. Because we haven't been able to reproduce this, it's likely that it's related to multiple editor tabs but we'll monitor the forum for other reports.