Bug#711141: gnuplot-qt: zooming doesn't work with the 'qt' terminal

[sfeam]

Upstream here (sfeam at users.sourceforge.net)

Mousing and zoom has always worked fine in the qt terminal.
The only mousing-related bug in our tracker was that 
left-mouse click did not terminate a "pause mouse" command.

I wonder if you are seeing the effect of something else.
For example, there are certain states of the main program
during which mousing is disabled.   Could you please give
a more detailed desciption of the sequence of commands and
mouse actions that you are using to test with?