My version of Poser is 12.0.757.

This is what happens when, for example, I click on 'Hierarchy Window'. Pieces of the window appear all over the screen!

The 'Parameters Dials' window no longer displays the 'X Y Z' dials. They are there but invisible.

All indications at the head of the 'preview window' are now also invisible.

If I resize the window, what should be at the bottom now appears at the top of the window!

I modified the value of 'General Preferences \ Interface \ UI Scale': At the next start, windows are displayed larger or smaller depending on the value entered but the display malfunctions still persist.

Is version 13 my only hope?

Thank again for your answers !