I always try the re-dock the sidebar by moving it to the corner waiting for a 'snap'. It doesn't.
Steps to Reproduce:
No snapping corner(s)
User Profile Reset: No
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Well yeah, docking is pretty frustrating. Luckily we can always click the sidebar settings button and duck/undock.
Cannot reproduce the issue. The snap ping area is there at the left and the right edge of the main window. Its size is like for every normal toolbar. Even the Navigator works under Windows (you can always press shift+ctrl+F10 to dock/undock the focused sidebar or Navigator, which is relevant on Linux). It would be a good idea to show the shortcut in the context menu with the undock/dock entry.
Setting as easyHack (just add the text to the context menu) and needsDevEval for the code pointers.
*** This bug has been marked as a duplicate of bug 90176 ***
*** This bug has been marked as a duplicate of bug 92122 ***
(In reply to Heiko Tietze from comment #2)
> (you can always press shift+ctrl+F10
> to dock/undock the focused sidebar or Navigator, which is relevant on
> Linux). It would be a good idea to show the shortcut in the context menu
> with the undock/dock entry.
> Setting as easyHack (just add the text to the context menu) and needsDevEval
> for the code pointers.
SetAccelKey for docking and un-docking menu items
@Jim, how would that help wanting to move Sidebar dock from R -> L edge? Issue is changing the docking target--multiple locations in the UI. E.g. Sidebar deck, floating F5 Navigator, Slide sorter in Impress.
(In reply to V Stuart Foote from comment #6)
> @Jim, how would that help wanting to move Sidebar dock from R -> L edge?
> Issue is changing the docking target--multiple locations in the UI. E.g.
> Sidebar deck, floating F5 Navigator, Slide sorter in Impress.
The code pointers given are for displaying the shortcut keys next to the Dock and Undock menu items in the Sidebar tab bar configuration popup menu. It won't solve the problem of sometimes not being able to drag dock. I have also experienced this but at the moment can not repro. I will make an enhancement report and give the code pointers there and these comments that don't directly pertain to the solution can be hidden if that would be better. Please advise.
OK, I think maybe Heiko misunderstood the OP's issue and as it worked for him, he called for an easy hack and code pointers to add the re-dock control.
Issue is valid, bug 92122 (Windows) -- bug 64438 (Linux, KDE for sure) -- and recently bug 128543 (macOS)
Maxim had some ideas on refactoring the docking frames for Windows specifically but maybe in general which may resolve the issue on KDE. Not clear what --if anything-- is happening with compositing the frames for qt5 and gtk3