In general: when you switch browser, then one panel navigation toggle in preferences will switch back to off. So your settings/preferences will not be kept.
Further we can’t reproduce it right now. It happened a few times in a row yesterday. I think it was while opening a lot entities in a row (like: from view, to contact, to task, to subtask, to linked entity etc.) but currently it’s working. We’ll document our steps when it happens again
Yesterday Marloes & I both used Google Chrome.
Marloes will use Chrome, I’m using Brave (Chromium based).