When using 3rd party module (like Virtualization) that tries to install
additional packages it at this moment works like this when you are in X
environment:

For each package there is pop-up showing progress and then this pop-up is
closed.

This causes severe issue if user runs compoziting enabled environment.
Imagine it like disco-bulb turning on and off as only on-top window is supposed
to be rendered right and all the underlying windows are greyed out.
More apps you install the more "funky" blinking you get.

Prefferable solution would be to somehow include the yast2 sw_single interface
that has the bottom progressbar and prints the installed packages.

Added value would be mostly for openSUSE, where the default DE's have enabled
compositing, but also for SLE case it would get at minimal prettier and at best
more understandable about what is happening for the installed packages.
For openSUSE it is quite commonly reported issue as I closed 3-4 during the
bugzilla cleanup mentioning this problem.