Mesh Masking and Layer masking changes unexpectedly

Hi! A problem I have recently encountered multiple times now are my masks, or portions of masks, changing unexpectedly while using a combination of Mesh Masking and Layer Masking.

A scenario - i setup regions of a character, masking a group to the mesh, then child layers to parts and pieces. Occasionally, the painted masking will change, or the Mesh masking will change, and the expected layers are not visible. Painter will output this corrupted result, and often if i turn a layer off, then on again it will fix the visual issue.

has anyone else expereinced this, or are there workarounds that dont involve not using mesh masking?