This indeed was a regression that slipped pass Q&A and ended up landing in RC. Good thing it was spotted there by you, the community members before it ended up in stable!
The fix was merged last night and ended up in today's devel image. It should land in RC shortly. As we are nearing the release of OTA-21 I encourage everyone who is able to, to switch to the RC channel. And whoever is willing to help in early testing, to switch to the devel channel. More eyes on the features help spotting regressions like this early.

@sladek9 You can go to settings => Updates and check if an update is available on your device.

Most of recent files in Gitlab/Github should be merged by the core team to be available. When done, you may change your update channel to test it (top right corner of update settings). (Dev-daily / RC - weekly / Stable - 2 months).

It's not recommended to flash files yourself unless you may brick your device.

Finally, I made a reset factory.
Miracle, all work !!!