XE 17.3 - Breaking Custom Launch Phrases?

One of my pairs of Glass updated itself to XE 17.3 this morning, and custom (not in the official list of approved phrases from Google) launch phrases for the "OK Glass" menu don't seem to work any more. The exact same project, deployed to my XE 17.2 pair, still works perfectly fine, but on XE 17.3 it no longer functions (even with the development permission in the manifest file). I tried a couple other phrases just to make sure it wasn't a change in the detection (I'm using a name in my launch command, and as such it's not technically an English word), but even a plain, pure English, action-phrased command no longer functions.

Anyone else experienced this yet? I'm trying to make sure it's not just my one pair of Glass misbehaving (and also to try to figure out why this would cease to function)

EDIT: An update to this, I've narrowed it down to a problem with multiple activities being launched from a single voice trigger...they work fine with a single activity, but if it would open up a menu of options, it only works with an "approved phrase". I detailed it further on stack overflow.