after start, panel clock overlaps icons next to it, until moving over with the (mouse) pointer

Distribution

Debian sid

Package version

6.0.4

Graphics hardware in use

Intel(R) Graphics (ADL GT2

Frequency

Quite often

Bug description

Hey.

Most of the time (though not always) when starting the cinnamon session, the clock and icons next to it overlap like so:

This stays until I move the (mouse) pointer over it, after which it gets corrected to:

Once corrected, it stays like that.

The issues happens now since quite a while ago, back then when it first occurred I forgot to follow it up (sorry), so I cannot really tell at which version this got introduced, but it definitely didn't happen in all versions before that.

Steps to reproduce

My settings for the clock applet are as follows:
Show calendar events: on
Show week numbers in calendar: on
Use a custom date format: on
Date format:

    %X
%x

that is:

00000000  20 20 20 20 25 58 0a 25  78                       |    %X.%x|

Date format tooltip: %A, %B %e, %H:%M

As said, it requires freshly staring the Cinnamon session.

Expected behavior

Start from the beginning with the non-overlapped rendering.

Additional information

Well, it's only a minor cosmetic issue... so not really important.

It may be related to #11592, thought that seemed to be an overlap within the text of the clock (?) and AFAIU the report, it may also happen randomly, and not only at Cinnamon start.

Thanks,
Chris.

Start at the Cinnamon clock applet and trace its startup layout or refresh path, using the reported custom date format and calendar settings to reproduce the initial overlap. Verify the panel renders the clock and adjacent icons correctly immediately after a fresh session, without requiring pointer movement.