Deleting sessions sometimes not recognized

[irvnriir]

Deleting Sessions at bookmarks or sidebar, sometimes are not recognized (so after you 'hide' the tabs, they go into not existing Session and disappear) .

[irvnriir]

It seems that this is actually about doing so in bookmarks, and related to #86 .

[tim-we]

Yes it seems so. However, trying to set tabs aside into a session that does not exist anymore should throw an error and not remove that tab. I'll look into that.