Created attachment 115647 [details]
those usually don't show up

SUMMARY
So i think I know you can fix the bug but this is what happens, when I open the app and press new document and created one. I go to setting-configure toolbar-and add the stabalizer,the normal brush smoother, and the weight brush smoother. when I close the app they aren't there anymore and when I go to fix it there aren't there in the filter. So I have to create another document to add it. I think the problem is, the fact that you have to make a new document to add them. so if you you add the smoothers to part where you don't even have to make a new document when is the homescreen. I think it will be fixed.

STEPS TO REPRODUCE
1. press setting-configure toolbar-add brush smoothers(stabalizer,normal, weigher)
2. Then close the app
3. then they disappear again

OBSERVED RESULT
the smoothers don't show up

EXPECTED RESULT
the smoothers don't show up

SOFTWARE VERSIONS
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION