Dear Maintainer,

After latest upgrade there is missing context menu which should be shown after
right mouse click on plasma desktop or on desktop widgets.
Now it's not possible to unlock desktop widgets, add new widgets or modify
existing.

That's likely due to your mixture of 5.22.0-1 and 5.23.0-1 versions of various
(framework) packages on your system.
The likely solution is to either get those from sid/unstable, wait till all
those packages are at 5.23.0-1 or downgrade all back to 5.22.0-1

I'm quite sure you've already solved this via help on IRC, but for future
reference and for others I'll still answer your questions.

CC-ing 830514 as the procedure is the same.

It's not that a package was removed, but that not all framework packages are
at the same version.
"dpkg -S $(which krunner)" which returns:
plasma-workspace: /usr/bin/krunner

If you then run the reportbug utility on it like this:
reportbug plasma-workspace -p -O

You'll see a list of dependencies and recommended packages and their versions
and that way you'd see the version mismatch that caused your issues.
Then making sure all the framework packages are at either 5.22 or 5.23 should
fix the issue.

The reportbug utility is normally used to actually report bugs, but the '-p'
switch makes it print to stdout, ie your Konsole window, instead of sending a
mail and the '-O' disables external queries as we're not interested in it for
this procedure.
You still need to answer the normal questions, but you can enter 'dummy' data
into it as we're only interested in the list of dependencies and recommended
packages and their versions.

HTH,
  Diederik

After latest upgrade, when all kde framework packages are in the same
version, everything works properly. Thanks for support.

This bug is actually happening on plasma-desktop as present in testing at this
date. Some packages are 5.8, some packages are 5.10 ....