Mouth set triggers not playing back

Hello. I have a character I created using PuppetMaker that has three mouth sets (Default Mouth, Happy, Mouth, Sad Mouth all inside a "Mouths" group) and I have triggers set for them as a swap set. I can sucessfuly trigger them before recording and after I record them, the trigger changes show up on the timeline. However, when I play back the scene, the mouth style doesn't change. Only the default is shown.

This also affects lip sync. The lip sync only shows up for the default mouth and the other two mouths don't activate during playback even when the timeline indicates a change.

The "Mouths" group has no tag applied and each mouth set has a blue "Mouth Group" tag. If I tag the "Mouths" group with the "Mouth" tag, CH reports rigging issues for all the visemes in the Neutral and Sad mouth sets.

Tagging the mouth sets with the "Mouth" tag doesn't make any difference.

Any help appreciated.