Created attachment 64709 [details]
A screenshot of the File menu problem.

The problem is minor but annoying.  I am using a laptop and an extended monitor. When I am using LibreOffice in the extended monitor (Hanns.G model) the "File" menu does no display properly and extends under the file button and to the left, i.e. it extends back into the laptop monitor.  Effectively, the File menu list straddles between the extended monitor and the laptop monitor and most of the menu cannot be seen. 
This does not occur when the extended monitor is to the left of the main laptop monitor, which is obvious.  It only occurs when the file menu sits in the middel of the monitors.

The attached picture shows the complete menu, but it is missing. the menu needs to open under and to the right.

Thanks :)