Every so often, for reasons I can’t explain, an add-in shows up in my Excel UI.
Today it was BlogHelpers.xla, but other times it’s different. It’s always in a non-maximized window view. That is, the workbook name is in the window’s title bar and not the application’s title bar. You can see that the IsAddin property is still True. If I close the UI window, the Add-in remains in the VBE projects window. But I’m too chicken to leave it in that state for long, so I always reboot.
Have you ever seen that before?