I have tracked this down to the Place Window plugin. Disabling the plugin releases a window from its edge-captivity and while it's turned off future border clashes don't ensnare windows. That would be great if it wasn't so necessary. Compiz is near-unusable without it so that's only ever a temporary fix.
And this is testing with the precise-proposed version, 0.9.7.6-0ubuntu1. It was the same before trying -proposed.
I have tracked this down to the Place Window plugin. Disabling the plugin releases a window from its edge-captivity and while it's turned off future border clashes don't ensnare windows. That would be great if it wasn't so necessary. Compiz is near-unusable without it so that's only ever a temporary fix.
And this is testing with the precise-proposed version, 0.9.7.6-0ubuntu1. It was the same before trying -proposed.