https://bugs.documentfoundation.org/show_bug.cgi?id=169799

            Bug ID: 169799
           Summary: Half screen on external monitor menus appear blank
                    with ASUS Display Widget
           Product: LibreOffice
           Version: 25.8.3.2 release
          Hardware: All
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: [email protected]
          Reporter: [email protected]

Description:
I tried to put 2 documents side by side on my external monitor from my laptop
running latest Win10 ... Libre Office is up to date, and it will happily put
one document to the left half of the screen and one to the right, but unless it
is split in this way using the built in Windows function, it doesn't work ...
when I use instead the ASUS display widget to more quickly align it the way I
want, the menus appear blank (no entries) ... so I don't know if this is just
an issue with Libre Office, but I didn't notice any other software having this
issue ... I just tested it with a few other applications, and they can all
display their menus just fine when I split them left and right on the external
monitor using the ASUS display widget ... so there is something about the way
the Libre Office menus appear in Win10 which is put off by that display widget,
but which doesn't cause an issue for the menus in any other software that I run
... sometimes the menus wont even display if I split them using the built in
Windows function ... this hadn't happened before I tested it with other
software, but after the test it now has this problem, in fact even going to
full screen they were failing ... so something seriously wrong there. Minimise
the window and maximise again didn't fix it. Bringing it down to the inbuilt
laptop screen didn't fix it. Closing 2 of the 3 document windows made the
remaining window start showing menu items, and the laptop fans slowed down ...
perhaps some kind of memory leak or other issue causing a bottleneck or some
kind of processing block ... I will try to repeat the issue after closing all
windows and see what happens.

I closed all documents, reopened the same three. At first, all drop down menus
(file edit etc) are filled with menu items, but after I used windows short cut
keys to transfer 2 of 3 document windows to the second monitor and then align
one left and one right, once the 2nd document was aligned right on the external
monitor, all Libre Office document windows INCLUDING the 3rd which was still in
full screen on the built in laptop, stopped showing menu items, just a blank
drop down box with nothing in it ... I didn't even use the ASUS Display widget
this time. So I will close all again, shut down the display widget so that it
isn't even running in the background, and see if the problem still occurs. Once
again on shutting down 2 of 3 document windows, the menus in the last remaining
document open start working again, but opening just one additional document
window again before shutting down the last, disables the menu items appearing
again in both document windows.

OK, so even after shutting down the ASUS display widget AND the display widget
service, the menu items are still not showing the moment a second document is
aligned left or right on an external monitor ... so there is definitely
something wrong here and which is only wrong with Libre Office, no other
software has this issue on any of my laptops, regardless of whether they are
running Win10 or even the old one running Win7, this is purely a Libre Office
issue it seems.






Steps to Reproduce:
1.Open any Libre Office document
2.Open a second Libre Office document
3.Shift 2nd document to external monitor and use any method to align it to left
or right half-split-screen even if no 3rd document open and original document
remains on built in monitor

Actual Results:
drop down menus in Libre Office appear as blank drop down boxes without any
menu entries to select

Expected Results:
I expect a functional menu of course


Reproducible: Always


User Profile Reset: No

Additional Info:
[Information automatically included from LibreOffice]
Locale: en-GB
Module: TextDocument
[Information guessed from browser]
OS: Windows (All)
OS is 64bit: no

External monitor is an asus rog XG27UQ
Doesn't matter if ASUS Display Widget is running
Laptop has onboard graphics plus RTX 3070

Edition Windows 10 Pro
Version 22H2
Installed on    ‎8/‎11/‎2024
OS build        19045.6216
Experience      Windows Feature Experience Pack 1000.19062.1000.0

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