Hi, Turned out the needed commits were present only in the master branch, they didn't make it to 3.22 branch. This is now fixed, and 3.22.11 is released. Please upload it.
Side note: package tracking system still shows 3.22.9 as the latest release available, despite the fact that 3.22.10 was available for some time, and now there is 3.22.11 too. I guess the problem is in debian/watch file. The regexp only catches versions with the third number being a single digit, therefore .10 and .11 aren't recognized. Well, we never had point releases getting to .10 before... so it was never detected. :) One more fix for debian/watch file: replace [246890] with [24680] to avoid catching x.9 or x.y9 releases. I don't think it will happen to mate-themes, but would be better for consistency with other projects.