I have a figure canvas and navigation bar embedded in a wx.Dialog. In matplotlib version 1.2.1 and earlier the zoom, home, back (and pan) all worked fine. If I upgrade to 1.3 (or 1.4.2) zoom, home, and back stop working. Only pan works. Any time I zoom, the zoom rectangle is drawn but nothing happens. The zoom rectangle remains on the screen after I release the mouse button. If I then switch to pan and left-click to pan the zoom takes effect. Same thing with the home and back buttons. If I click them nothing happens until I switch to pan and actually left click and pan then they take effect.

I also tried this with the user interface example: embedding_in_wx2.py
Running it alone it is fine. If I put it in my app and do the following:

    def OnShowClicked(self, event):
        frame = CanvasFrame()
        frame.Show(True)

The window shows correctly, but the zoom, home, back don't work just as I described above.

I looked through the changes between 1.2.1 and >=1.3 but I didn't see anything that would point to this. What changed between these versions that might causes this issue.

How do I work around this issue? Is there an example somewhere that shows the right way to do things now to get zoom, home, back, etc. working again?

Thanks.