SUMMARY Messages are often marked as unread after reading when new mail is received. This happens with Gmail account. STEPS TO REPRODUCE 1. Read mail just before scanning for new mail 2. 3. OBSERVED RESULT Already-read mail gets marked as unread until selected again EXPECTED RESULT Read mail stays marked read while new messages show up. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora 33 KDE Plasma Version: 5.20.5-1.fc33.x86_64 KDE Frameworks Version: 5.79.0-2.fc33.x86_64 Qt Version: 5.15.2-2.fc33.x86_64 ADDITIONAL INFORMATION This is a long-standing problem that has been here for many years.
It also happens to me sometimes. Gmail and IMAP. It only happens occasionally (but then it has a tendency to happen repeatedly for a while). And only for the last few months? years? I'm not sure, but there was a definite point when it started happening, before which it didn't happen.