Being relatively new to Blender and 3D modelling in general, I recently made a low-poly female character using video tutorials by PXstriker (Linked below). The model itself is made using the mirror modifier, as to only need half the work.
After I started rigging and posing this model, I noticed that the model rips open at the back, particularly near the legs. Whether the mirror modifier is applied to the mesh or not doesn't seem to make a difference.
Is this a normal problem using the mirror? I've looked around google and other tutorial sites, but nothing similar to the problem seems to be mentioned.
YouTube Channel Link: https://www.youtube.com/user/PXstriker/videos
Front view of the model:
Back view of the model, mesh is visibly opened whenever the legs are posed: