SUMMARY Many modern mice have extra buttons, some of them are used to navigate "back" and "forward", usually placed in the thumb region. When using KDE's open or save file dialog we are able to use these buttons to "back" and "forward" through our folder history. However, if we are hovering the mouse pointer above a an item (file or folder) at the dialog while we click these buttons, it actually select the items before doing the navigation. If we happen to me moving the mouse pointer even slightly, it actually starts a drag operation on the item that we were hovering. In fact, if the mouse has other extra unassigned buttons, any/all of them can be used to trigger this bug. STEPS TO REPRODUCE 1. Own a mouse with "back" and "forward" buttons 2. Open KWrite, open the "Open File" dialog 3. Click & hold with your "back" button over some file/folder shown at the dialog 4. Move your mouse while holding the "back" button OBSERVED RESULT You are now dragging them item while holding the "back" button EXPECTED RESULT It should have simply navigate "back" with the button down event (if you had a folder history) without initiating any unintended drag operation. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.2 Graphics Platform: X11 ADDITIONAL INFORMATION In Dolphin, the behavior is correct. It can be taken as a reference behavior to be replicated in the open/save file dialogs.
Git commit 54bcd32cd61aa9332d496fb49a19028f665a1643 by Méven Car, on behalf of Sean Baggaley. Committed on 14/11/2024 at 12:10. Pushed by meven into branch 'master'. KDirOperator: improve handling of forward/back mouse buttons Since the the forward and back mouse buttons would be passed through to the underlying Qt widget which handles it like any other click, this meant single-clicking with these buttons would allow selecting and dragging items, and double-clicking would open files or folders, instead of just navigating through the history as expected. These buttons are now handled when pressed, not released; this preventing being able to drag items, and bringing behaviour in line with Dolphin. Double-click events for these buttons are now properly handled. The events are then discarded to stop single-clicks selecting items, or double-clicks opening files or folders. M +17 -11 src/filewidgets/kdiroperator.cpp https://invent.kde.org/frameworks/kio/-/commit/54bcd32cd61aa9332d496fb49a19028f665a1643