Editing / modifying Header or Footer in Numbers not possible
Since upgrading to MacOS 14 (Sonoma) I seem to have troubles with modifying/ editing header and footer in Numbers in print screen mode. My keyboard, while trying to type, doesn't respond. Strangely enough the commands (E.g. pasting, inserting date form the menu etc.) do function.
I have lain down this problem with Apple Support. They have responded with suggestions without any result so far.
Is there anyone who can provide a guideline to solve this sticky problem?
MacBook Pro (M1, 2020)