I yesterday successfully installed Mageia-4 but came across a strange problem in LibreOffice Writer. I created the first page of a document by copying parts and bits from web sites (no image -- just text). When I reached near the bottom of the page I scrolled back to the top using mouse wheel to see the start of that page. Then I scrolled back to the bottom where I was adding text.
Doing this, the first paragraph of the document (still partly in visible range) just vanished from display leaving an empty space where the paragraph was supposed to be

When I save the file it saves fine because on next open, I see the complete page. I convert the page to a PDF file and open that PDF file which does not suffer from this scrolling problem. I take screen shots of the Writer window and the scren shots capture this problem. They are attached.
I can reproduce the problem everytime -- even by dragging the Writer's scroll bar back and forth.
Some info on my system:
- Mageia-4, x86_64, installed from full DVD on Samsung 840 SSD, 1.5 years old.
- RAM 2GB, processor Q9550 @ 4 GHz, ATI Radeon HD 3450 (pretty old), Monitor: Single 20" Samsung Syncmaster on 15-pin D-Sub cable
- Video driver: open source radeon (not fglrx)
- System load at the time of problem: Almost none.
- This sytem plays full screen 720p movies without a hitch but no gaming involved.
- LibreOffice Writer: Version 4.1.5.3, Build Id: 4.1.5.3-1.mga4
- After yesterday's install, I updated the system today and then I noticed this problem. I do not know if the problem would show up with the version packaged in full 64-bit DVD.
- The System Monitor shows a mere 6% CPU usage when I go back and forth scrolling moderately fast.
This was the first time that Mageia did not complain about the display and the installation went very smooth. On Mageia-3 I had to struggle with command line and the radeon driver getting stuck with the dreaded AGP-mode(?).
Thanks.