zoom during mouse-pan focuses on wrong location
Submitted by Loren Merritt
If I change the zoom level during a pan (middle-click-and-hold, "+", release mouse button), then the screen jumps to a completely different location on the canvas than it started at. The new focus of the pan is at the same display distance from the upper-left corner of the canvas, which is a different pixel now that the pixel-to-display ratio has changed.
Using space key rather than middle-click to activate pan mode doesn't trigger the same symptoms. Instead it prevents me from zooming, i.e. "+" does nothing while space is held down.
GNU Image Manipulation Program version 2.8.4 git-describe: GIMP_2_8_2-186-g8a9af4cd
using GEGL version 0.2.0 (compiled against version 0.2.0) using GLib version 2.34.3 (compiled against version 2.34.3) using GdkPixbuf version 2.26.3 (compiled against version 2.26.3) using GTK+ version 2.24.12 (compiled against version 2.24.12) using Pango version 1.30.1 (compiled against version 1.30.1) using Fontconfig version 2.8.0 (compiled against version 2.8.0) using Cairo version 1.12.8 (compiled against version 1.12.8)
Happens on both linux and windows.