Text Cursor or I Cursor disappears after couple of seconds

In Safari, Word, Numbers etc. (in fact everything with a text insertion field) the text cursor disappears after a couple of seconds. While inserting text, you have to put the text cursor back every couple of seconds using the mouse. Force quit and restarting programs as well as rebooting the machine hasn't helped. The only thing that helps is resetting by removing the power cable. Then it is OK for about one week and then the problem starts again.

This problem started after upgrading my late 2015 27"Mac to Monterey.

For those wondering; the problem is not user dependent.

Does anybody else experiences a similar issue?