Saddened that there is no official Apple response to this despite the effort all these people went to report this.
I have the exact same issue occur over and over again where it crashes in creating a new line or even copying the whole .txt file to paste it into notes.
How ridiculous is that I have to even transfer a note between two programs native to Apple and I struggle to even do this as the former is crashing.
Please solve this as text edit is a life saver otherwise