Comment # 57 on bug 1041112 from Fabian Vogt

(In reply to Antonios Konstantinos Pappas from comment #56)
> This still affects Plasma in 15.1
> 
> https://openqa.opensuse.org/tests/1242964#step/updates_packagekit_kde/18

I would say that's a different issue.

> it can clearly be seen that after a click on "install updates" these are installed, the dialog shows the 1 update to install again, then it suddenly shows that there are no updates to install.

Instead, what's happening here is that the updates are installed, then it tries
to fetch updates again and only if that does not return any results, it clears
the icon state.

This is IMO the right behaviour, as with software stack updates, multiple
passes are required.