Yeah - it's best we keep that as a workaround users can apply themselves, given that the problem affects only one known piece of hardware and possibly only one known configuration. I was trying to figure out why the toolbar and popup brush choosers aren't affected: it's because they dismiss immediately after selection, and the subsequent event happens on the canvas.

The 5 is a fairly new tablet still, and support may improve. However it's unlikely that gtk2 will evolve to do the input things that gtk3 does. All the more reason for an early migration away from it in the 1.2 development cycle :)

This really looks like a GTK2 bug, but it's odd enough to mention in the tracker anyway. Just in case people ask.

If an Intuos5 (PTH-650) is plugged in, my laptop's touchpad cannot be used to select brushes: clicks on the PixbufList don't seem to be getting through at all. It doesn't matter if the Brushes window is docked or undocked, and brush groups can still be chosen with the laptop touchpad. The laptop touchpad works elsewhere, and can be used for painting.

Does not affect the touchpad when an older Bamboo tablet (MTE-450A) is connected instead.

The popup "quick" brush selector, and the toolbar dropdown's brush list, are unaffected.

Commenting out the following lines in gui/brushselectionwindow.py restores the expected behaviour in PyGTK:

Could this be a suitable workaround? There seems to be some cleverness in the module for setting the device-specific brush at the point the button is pressed.

GTK3 mode is unaffected by this bug; however if MYPAINT_ENABLE_GTK3 is not set at runtime, the bug still presents when compiled with enable_gtk3=true.