Seems like Start11 v1.24 broke Curtains TB "Transparent" setting

This started immediately after installing the new Start11:


It doesn't seem to matter how the TB transparency is set within Start11, merely that Curtains is set to "Transparent".
I can "fix" it by setting TB transparency to "0" in Start11, and setting Curtains transparency mode to "none":


Thanks.
P.S. - Interestingly, the Curtains "Blur" mode seems to still work correctly.