[Libreoffice-bugs] [Bug 140761] New: LO 7.1.0.3 issues with Writer on Mac OS X Big Sur with External display - Display has rendering issues it seems

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=140761

            Bug ID: 140761
           Summary: LO 7.1.0.3 issues with Writer on Mac OS X Big Sur with
                    External display - Display has rendering issues it
                    seems
           Product: LibreOffice
           Version: 7.1.0.3 release
          Hardware: All
                OS: Mac OS X (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: alexandrefarley at gmail.com

Description:
Hi!

After posting this on the
https://ask.libreoffice.org/en/question/296033/lo-71-issues-on-mac-os-x-big-sur-with-external-display/
, I was asked to submit a bug report here.

I've decided to upgrade to Mac OS X Big Sur 11.0.1 today.... Crap ! It's not
the latest version of Biog Sur I know. But another user on the Forum website
confirmed the issue is still going on with Big Sur 11.2.1

I used to have LO 6.4.2002 on Catalina and there was no issue.

I've been working with an external display 27" 4k Philipps brilliance 272P
connected to my MBP 13" inch through USB-C cable.

The resolution 3840 X 2160 at 30Hz

After I upgraded to Big Sur, I saw that LO 6.4.2002 wouldn't open. So I
downloaded and installed LO 7.1.0.3

It opens well but the documents I used to work on with my external display, now
have display issues. See screencast here: 

https://drive.google.com/file/d/1hV3-7qlQyyUCv17-jiEizt3un292Zwqk/view?usp=sharing

the screencast shows the difference between working on the document on my MBP
display and working with it on my External 4K display.

I tried creating a new writer document from scratch and it does the same thing.
I tried with a Calc and Presentation and the issue does not happen with those.
It only happens with Writer documents.

What's up with that?

Is there a way to fix it?

Alex.

Steps to Reproduce:
1.With the setup previously explained (MacBook Pro connected to an external
display), open a Writer document and drag it on the external display
2.Type text in the document
3. Zoom to page width
4. scroll through pages

Actual Results:
The document content is not displaying properly, it lags, it doesn't render as
it should.

Expected Results:
Document content should scroll with no problem and display properly as it does
on my MacBook Pro internal display


Reproducible: Always


User Profile Reset: No



Additional Info:
no other info to provide.

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