SUMMARY The date is initially (after login) too big and wraps when the panel is vertical. STEPS TO REPRODUCE Create a default panel Move it to the right edge of the screen. Change the width of the panel to 56px. Enable the date for the widget. Log out. Log in. OBSERVED RESULT https://i.imgur.com/sxWkGGX.png EXPECTED RESULT https://i.imgur.com/8HGtgqy.png (Although, the date is a bit too small imo.) SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch 5.18.0 and KDE Neon 5.18.80 ADDITIONAL INFORMATION As a workaround, resizing the panel to be smaller, then back to 56px will fix it. Although, the date is a bit too small imo.
Oh gosh. Almost certainly a regression from https://cgit.kde.org/plasma-workspace.git/commit/?id=02c89d749475f01f23036a6011f1bfd20254fc7c, to fix Bug 381551. This clock sizing code is so fragile. :/
I had literally the opposite regression. The text is now too small.
*** This bug has been marked as a duplicate of bug 417852 ***
I still have this problem on 5.19.3, with "Date Format" set to "Short date" and font style set to bold. See https://imgur.com/a/OcbSquV. This happens on every restart of plasmashell. Manually increasing the width of the panel and then shrinking to its original size corrects it.