Sorry for late reply!
You mean on sopuli's default web UI? This might be a lemmy-ui specific issue. If you'd like to address this I suggest https://github.com/LemmyNet/lemmy-ui/issues
Yhteisö instanssia koskeville tiedotuksille, palautteelle, metakeskustelulle ja avulle. Katso myös UKK!
Community for announcements regarding the instance, feedback, meta discussion and help. Check the FAQ also!
Users needing support can also come to our Matrix Space.
Tukea tarvitsevat käyttäjät voivat myös tulla Matrix-tilaamme.
Sorry for late reply!
You mean on sopuli's default web UI? This might be a lemmy-ui specific issue. If you'd like to address this I suggest https://github.com/LemmyNet/lemmy-ui/issues
I can confirm this behaviour. But yes, it would be better if it automatically disappeared after hiding.
Maybe there are alternative frontends that do this?