Part of them opens narrow pop-side windows which you can switch-off clicking the same icon again.

The other part opens new tabs and you are not able to switch them off typically for the Sidebar as I am expecting, but I have to use any method to close a Tab.

It is inconsistent solution. It should be corrected. It needs to be corrected.

Other my posts touching the topic of "Sidebar mishmash".

• https://forums.opera.com/topic/44487/sliding-part-of-sidebar-vertically
• https://forums.opera.com/topic/44397/some-vertical-division-lines-on-setting-pages-are-not-movable
• https://forums.opera.com/topic/44286/workspaces-synchronize-windows-slides
• https://forums.opera.com/topic/44284/workspaces-desynchronize-show-hide-options
• https://forums.opera.com/topic/44283/workspaces-desynchronize-icons
• https://forums.opera.com/topic/44397/some-vertical-division-lines-on-setting-pages-are-not-movable
• https://forums.opera.com/topic/44396/bookmarks-page-has-hidden-movable-border-line

[Fig. 1] What I mean switch on/off