Easy steps to reproduce:
- Shorten your web browser window so that only a few lines are visible.
- Open a page in VisualEditor.
- Open the keyboard shortcuts "dialog" box in the (?) Help menu.
- Try to scroll.
Originally reported in User agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.152 Safari/537.36 and confirmed in Safari 9/Mac OS 10.10.5
We used to have scroll bars in this dialog (e.g., per T92723: Keyboard shortcuts dialog should be vertically scrollable, not horizontally scrollable ), so presumably this is a regression.