After active area under mouse changes, you have to move mouse to various degree to update mouseover.
When clicking on conversation options in dialog window, the new option that is scrolled under the cursor is not active until you move mouse slightly. Only after that the option is highlighted and can be clicked.
When clicking in a list (e.g. movie to play), the highlight is not updated until you move mouse away from the listitem
Door mouseover not getting updated after opening the door, viz TT #3191031