I'm not able to reproduce this on Windows 7 x64 (neither with a recent trunk build nor with the latest 0.91 stable)

However it might be related to an issue I recently hit when fixing some issues with CDR/VSD import dialogs (see [1] and [2]):
The problem there is that when pressing the spin button an action is triggered that takes some time to process and therefore blocks the main thread (something similar could be caused by rendering the rectangle with changed height in your example).
Since the main thread is blocked, the callback that is triggered when releasing the mouse button is delayed. When it finally executes the spin button "thinks" that the mouse button was pressed for much longer than it actually was and therefore changes the value even further (because spin buttons are supposed to do this if you hold the button).

If this is the same issue and somebody finds a nice fix let me know, so I can implement the solution for the CDR/VSD import dialogs.

Regards,
Eduard

[1] https://bugs.launchpad.net/inkscape/+bug/1395435
[2] https://bugs.launchpad.net/inkscape/+bug/1441437


Am 10.03.2016 um 16:27 schrieb C R:
Has anyone else noticed there's something pretty seriously wrong with the spin buttons in Inkscape? 

If you click more than a few times on either the up or down arrow the value goes nuts, and keeps going nuts until you switch to a different tool.

Here's a short video capture of the issue:
http://www.opendesignstudio.org/inkscape/Inkscape_spin_button_error.mp4

Any ideas?

This bug doesn't seem to affect any other programs (I tried Scribus, and GIMP, and both do not feature this bug).

I'm running Inkscape 0.91+devel r (Mar  8 2016).

This bug is also present in 0.91 stable.

-C


------------------------------------------------------------------------------
Transform Data into Opportunity.
Accelerate data analysis in your applications with
Intel Data Analytics Acceleration Library.
Click to learn more.
http://pubads.g.doubleclick.net/gampad/clk?id=278785111&iu=/4140


_______________________________________________
Inkscape-devel mailing list
Inkscape-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/inkscape-devel