Open the toothSurfaces MUI listbox (retrying if it doesn't appear), check each surface letter by option text via JS and verify it ends up selected, then close the popover with Escape or a backdrop click so its overlay no longer blocks the fee field. Waits for the tooth-number listbox to close first so its options aren't misread. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>