Description:
LibreOffice Calc on Mac OS is rendering the text and numbers in a blurry (out of focus) way that makes not possible to use the application anymore.
All started after I tried to use a different resolution of my screen on my Mac mini. Since it wasn't successful, due to many Mac OS limitations, I decided to scale back from 4K to 2K. And here the problem appeared.

Steps to Reproduce:
1.Just open CALC and compare with any other application.

Actual Results:
The text in the cells is blurry and makes the application impossibile to be used.

Expected Results:
I expected to have a standard rendering of the characters. What is very weird is that while typing the text is normally shown, but after pushing the "Enter" button and fixing the content of a cell the blurry text shows up.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
Version: 7.0.3.1
Build ID: d7547858d014d4cf69878db179d326fc3483e082
CPU threads: 4; OS: Mac OS X 10.16; UI render: default; VCL: osx
Locale: it-IT (it_IT.UTF-8); Interfaccia utente: it-IT
Calc: threaded