Comment # 42 on bug 1221531 from Bernd Speiser

(In reply to Episteme PROMENEUR from comment #40)
> Tumbleweed
> 
> 3.98 packages installed
> 
> The newly installed extensions are not disabled.
> 
> But you must install again your old extensions (do not uninstall them).
> 
> For me, the problem is solved.
> 
> Thanks to all

On my system (15.5), there was no need to re-install any of the extensions.
Everything just re-appeared including settings.
I add this, to just to save someone from unnecessary work, maybe.