I'm now using 2.1.0 from the nightly build from the night of 3/7.
I'm using OS X with an Apple Magic Mouse. When I started on LibreCAD, a few days ago, with the current version, when I scrolled left or right or up or down on the mouse, it scrolled that way on LibreCAD. I'm almost positive that once I loaded the nightly build today, it still worked that way. I don't know what I did, but those motions control zooming. From reading the manual
Pan And Zoom section, I see that it's normal for scrolling on the mouse wheel controls zoom and that using shift or control allows it to scroll instead of zoom.
I'm finding that pressing control keeps it from zooming or scrolling and that I get good up and down scrolling when I press shift, but not sideways panning/scrolling.
Why did my system original scroll and pan instead of zooming? Apparently that's not default settings. More importantly, is there a way to change it back?