Description:
In Libre Office Calc, when right-clicking on a tab at the bottom of a spreadsheet the consequent menu that then normally appears beside the tab at the bottom of the spreadsheet appears at the top of the window instead. Now, this only happens on my two external monitors in Apple's 'Extended Mode' only, i.e. when the spreadsheet is on my main MacBook Pro screen the menu appears where it should be at the bottom of the screen. Plus, initially, you only see a partial menu and you then need to click both up and down arrows to then be shown the complete menu.
I have just come off the phone to Apple Support and we have tested this with MS Excel and MS Excel does not have the problem. SO it would appear (And this is my telecoms engineering test mode kicking in) that it looks like the interaction between Libre Office Calc and the extended monitor software that is causing this annoying problem to happen.

You are welcome to contact me to do a screen share if you so wish.

Steps to Reproduce:
1. Open a spreadsheet with multiple tabs, 
2. Select a tab then right-click on that tab
3. The menu will appear at the top of the screen on external extended monitors and not where it should be beside the tab at the bottom.


Actual Results:
The right-click menu appeared at the top of my screen and still does every time I use LibreOffice Calc


Expected Results:
The menu appears at the top of my open spreadsheet window.
Surely the menu should be appearing at the bottom beside the tab in question and not at the top of the screen?



Reproducible: Always


User Profile Reset: Yes



Additional Info:
I will leave my contact details should anyone wish to call me or email me about this bug. My background was in Telecomms Engineering and I use spreadsheets for loads of things in my life.
Mobile +44 (0)7704 130 833
Email neil.burns@uwclub.net

Additional information...
LibreOffice:

  Version:	7.2.0.4
  Obtained from:	Identified Developer
  Last Modified:	17/08/2021, 00:51
  Kind:	Intel
  Signed by:	Developer ID Application: The Document Foundation (7P5S3ZLCN7), Developer ID Certification Authority, Apple Root CA
  Location:	/Applications/LibreOffice.app

From 'About LibreOffice'
Version Information

Version: 7.2.0.4 / LibreOffice Community
Build ID: 9a9c6381e3f7a62afc1329bd359cc48accb6435b
CPU threads: 8; OS: Mac OS X 10.16; UI render: default; VCL: osx
Locale: en-GB (en_GB.UTF-8); UI: en-US
Calc: threaded

Just to re-iterate, this is happening on my two external monitors in Apple Extended mode only. When I put the spreadsheet on my MacBook 15 inch screen the menus appear where they should be at the bottom of the screen.

I honestly could not find OpenGL anywhere within Libre Office or in the system preferences or as described in a terminal window so I have no idea if that is currently enabled or disabled.