The several kde clocks are not working on snapshot 2023-06-04.
The analog one shows a fixed time.
The digital and approximate shows nothing (an empty space).
No matter if the widget is placed on the desktop or in taskbar.

Reverting to snapshot 2023-06-01, the clocks was showed ok again.

There is no indication of problem on date/time when issuing the command date.
The file /etc/localtime is a symbolic link to /usr/share/zoneinfo/America/Sao_Paulo

There is no KDE component/library/framework updated between 2023-06-1 and 2023-06-01 neither a kernel update. Very confusing....

On tumbleweed 2023-06-04 I have created a new test user with a empty home and loaded KDE for the first time for this new user. By default, a digital clock should be on taskbar. All I see is an empty space. If I hover the mouse pointer over the digital clock area I see an empty box where it should display the date/time in long format.

Operating System: openSUSE Tumbleweed 20230604
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.106.0
Qt Version: 5.15.9
Kernel Version: 6.3.4-1-default (64-bit)
Graphics Platform: offscreen
Processors: 12 × AMD Ryzen 5 7600X 6-Core Processor
Memory: 30.5 GiB of RAM
Graphics Processor: AMD Radeon RX 6600