Writer comments flicker when you move mouse point on it (without OpenGL)
Steps to Reproduce:
1. Open Writer
2. Insert a Comment with some phrase
3. Move mouse point on it
Comment is just ROCK!
User Profile Reset: No
Version: 126.96.36.199.alpha0+ (x86)
Build ID: 1485bcc796dd8bd53762368ec4a1345ddb7cda72
CPU threads: 4; OS: Windows 6.1; UI render: default; VCL: win;
TinderBox: Win-x86@62-TDF, Branch:MASTER, Time: 2019-09-02_10:30:21
Locale: ru-RU (ru_RU); UI-Language: en-US
To be precise, hovering over the name / date+time flickers.
Interestingly, there's no flicker in Impress (which also has such details, while Calc comments don't).
Confirmed with LO 188.8.131.52.alpha0+ (d05780f102c29b734e21ca729031d625ebf283ef), 3.3.0 / Windows 7.