Thank you for your commitment.
Today I’m on 3.6.0.beta3-latest (bd135646c3).
I changed to “Foundation” and write messages and chats from my normal user to admin and back.
My Client is Xubuntu 22.04. In Chrome (141.0.7390.76) and Firefox (145.0) no change. No notification while logged in und the “new” icons do not disappear if read. Only on reload.
I will try later on Ubuntu 24.04 and Win11.