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[Problem/Bug]: Toolbar disappears either hiding all left side (bookmarks) or right side (Search, FullScreen, MoreSettings, PageSelector, PageLayout, Save, SaveAs, Print) icons.

4

### What happened? Following report #2866 : Toolbar disappears either hiding all left side (bookmarks) or right side (Search, FullScreen, MoreSettings, PageSelector, PageLayout, Save, SaveAs, Print) icons. ### Importance Moderate....