Hi Vladimir. Hope all is well. I’m still having trouble with this issue in the latest update. I can see the Selected/Not Selected options under Widgets, but when you put it to Not Selected it behaves identical to Selected. I’m just going to have to shut down access to Appearance and Widgets in the meantime and do manual edits for user sidebars when they ask. When the next update comes, I’ll try the feature out again and report back. Take care.