Viewer not closing after scroll

I regularly use F7 (Set VIEWPANE=Toggle) to toggle the Opus Viewer on/off. Whilst viewing an Opus crash dump (not sure why, as it's all Greek to me!) I noticed that after scrolling, F7 would no longer toggle the Viewer closed. After clicking in the left pane, F7 worked again.

Regards, AB

Toolbar hotkeys don't work when the viewer has focus. (In case the viewer needs them for itself.)

Not all viewers will take the focus, but the text viewer will (e.g. to let you type into it to find things).