cp[y paste and undo very buggy
copy/paste functionality instable. sometimes erases blocks of code.
cntrl Z or UNDO is set to 50 steps in history, but doesn't work :-(
This issue has been fixed in Beta 2.
I tried it out today. The first time I tested pasting some text, I encountered a problem, where there was no history for Edit -> Undo. In other words, I couldn't un-paste the text. After closing the file without saving any changes, and then reopening the file and trying the same area of text to overwrite by pasting, I was able to undo that text pasting.
We have made fixes around the copy-paste issue in the new Beta build that we shared recently. Can you please try it out and provide us feedback?