Plasma turns weird

[El_Rapha]

Hi all,
Since my last apt update yesterday my Plasma desktop turns weird with black squares instead of borders, icons or buttons. Look at the screenshot! It occurs only on kde applications, everything is ok with gtk.
I run a Debian SID up to date server with bi Xeon, Supermicor motheroard and AMD Radeon Pro WX graphic card.

Do you experience the same troubles with an up to date SID ?

Thank you for your answers.

[sunrat]

Probably a casualty of the massive time_t transition. It's a dangerous period in Sid at present. It is recommended to wait until all is clear before upgrading. See - [SID - Unstable] update stuck at resolving dependencies
In Sid one should always do very regular system backups especially before large upgrades, then you could restore to before the upgrade.

Moved to Testing and Unstable subforum.

[El_Rapha]

Arf, that's what I was afraid of! I will wait.
Thank you very much for your answer.