Edit menu at the top of the screen.

General Preferences option at the bottom of the menu.

Interface tab.

Launch to factory state.

Ok button.

Exit out of Poser, relaunch and see if it solves the problem.

All the best.

LROG

Who honors those we love for the very life we live?, Who sends monsters to kill us?, and at the same time sings that we will never die., Who teaches us whats real?, and how to laugh at lies?, Who decides why we live and what we'll die to defend?, Who chains us?, and Who holds the key that can set us free... It's You!, You have all the weapons you need., Now Fight!