At the same time the handwriting and highlighting tools on cards also stop working.
Only solution is the closing of all the marginnote windows and reopening.
This is extremely annoying.
I am using Ipad pro, Ipad os 15.
I tried and this happens in both of pdf rendering engines.
And also I frequently use child mind maps and focus mode. Therefore it doesn’t consume so much memory.
I hope this will be solved soon.
