Scrollbar doesn't work when window is maximized and mouse is hugging right side of the screen in certain Qt programs.

Submitted by jazztickets

Assigned to Olivier Fourdan @olivier

Link to original bug (#15911)

Description

Created attachment 8975 gif

In Qt programs like Cantata or VLC, when you maximize the program and try scrolling on the very right edge of the screen, the scrollbar doesn't register.

Steps:

1. Load up Cantata and maximize the window.
2. Add enough music to the playlist so that scrollbars appear.
3. Move your mouse as far right as it can go.
4. Click the scrollbar "thumb" and drag down.
5. Notice how no scrolling occurs.

This also happens in VLC. However, it does not happen in QtCreator for whatever reason. It does not happen in KDE or Gnome.

Attachment 8975, "gif":

Version: 4.14.0