I've assigned some verticles to a bone with a weight of 1, so it should follow that bone entirely, but unlike some nearby bones with the same weight (1,000 to the bottom lip bone), these four verticles don't follow. The shots are taken from the inside of the mouth, the first shot is the default pose, the second a posed one.
I've tried resetting the weights for those verticles and both repainting them as well as assigning them to the bottom lip bone with the component editor but either way causes this.
I've done a lot of mirroring and loading verticles from weightmaps because of a problem I had earlier, but this only seemed to start showing up recently.
If anyone has every had a similar problem or knows of a solution I'd love to hear it. Thanks in advance!