I've painted the vertices around the thigh of a model, but noticed that when I move the bone, the vertices in that vertex group don't move with it. I checked the vertex weights (N) and noticed that the vertex group isn't listed in the "Deform" tab. On all other vertices that are working, the vertex group shows up in vertex weights under the "Deform" tab.
How can I fix this?
Example of the vertices in the vertex group
The vertex group showing in edit mode
What the Vertex Weights property shows in the right viewport window (N)
Running Blender 2.79 on Linux Mint 18.3 x64, Cinnamon 3.6.7 desktop environment