osc buttons not working for playbacks 11-20 in 4.6.1226.0

According to the manual it should be possible to trigger the playback buttons for playbacks 11-20 using osc.
But it does not work. Buttons for Playback 1-10 work fine, faders for 11-20 also work fine. Just the buttons are not registering.
I am reasonably sure that I am sending the correct data because I can see the data in wireshark and there is no difference between sending a button press for playback 1 and playback 11 other than the changed path.

Fixed in 4.6.1227.0