Comment # 10 on bug 1001167 from Gary Ching-Pang Lin

I sorted out my issue. It turned out to be my fontconfig settings. The font I
used for gtk3 is 'Bitstream Vera Sans Roman 10' and I set a strong binding in
fontconfig to bind the font with 'cwTeXHeiBold' for the Traditional Chinese
characters. Once I replaced 'cwTeXHeiBold' with 'Noto Sans TC', LO impress
became responsive again.

My conclusions:
1. The gtk-style fixes are already in Tumbleweed. Those who had issue with gtk3
VCL could try it now.
2. I'll update my fontconfig settings. My current settings are something I used
10 years ago so it's time to update it.