Not sure how to describe the problem, but when I click on the triangle to for example delete a comment the menu that should open does not. Same with correcting spelling error. It is best to just see for yourself:
It has been acting this way every since it started opening on the border between monitor 1 and 2 for no reason (never opened or closed a libreoffice app on anything other than monitor 1)
(edited by ajlittoz to activate the screenshot)