Bug Description:
When clicking on an interactable object in the tavern, sometimes the interaction menu doesn't appear. Usually this happens with the interactable items behind the bar (Bell, Beer Keg, Water Cooler, Tea Kettle, Coffee Pot, Wash Station).
Workaround:
Try right clicking on a different interactable object, like a table or bar seat. Once the interaction menu appears again for one of these other objects, it should resume working everywhere.
Status:
Fixed in 1.1a.