[Libreoffice-bugs] [Bug 138122] LibreOffice text blurry on Retina displays on macOS 11

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=138122

--- Comment #83 from J-M Allier <jean-marie.allier at laposte.net> ---
I upgraded my MacBook Pro to macOS Big Sur 11.0.1 and then LibreOffice from
6.4.7.2 to 7.0.3. The characters were blurry on 6.4.7.2 and on 7.0.3 as well.
Because of other bugs on 7.0.3 I reverted to 6.4.7.

I have done some tests with OpenOffice 4.1.8, NeoOffice 2017.23 and,
unfortunately with LO6472, but I believe it gave interesting results. I hope
this will help to solve the bug.

I used an external 1920*1080 HD screen connected by HDMI to the MacBook Pro.

First I set the main display to the Retina display and compared characters with
the same file (an ods file) on the three apps. Moving windows from the main to
the secondary and back to main display. The characters were crisp on the Retina
display with NeoOffice and OpenOffice. Blurry in LO.

Then I set the main display to the external display (1920*1080). 

Of course, LO characters were blurry on the Retina display. 
But a difference appeared between OO and NO when windows were moved to the
Retina display. NeoOff displayed crisp characters on Retina, but OpenOff
displayed the same blurry characters as LO. 

Maybe this will give some clues.

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