I had this problem in TBS7 on an old machine, and it persists in TBS8 on a new/refurbished 2011 i7 Mac with 20GB of RAM, so I now believe the error is in my implementation.
*In the attached screenshot, the “torn” art is on the same layer as functioning pieces.
*Each joint’s bones are “Elliptical” and their outlines edited to fit around the vector art, which is created in the application. There is a “tearing” of the artwork.
*Each piece of vector art has been Flattened and Optimized
*I’ve tried deleting the bones and creating new ones.
*I’ve tried toggling the bones from “Infinite” to “Elliptical” thinking I could force it to accept editing.
*I’ve Closed the project file and restarted the Mac.
*My OS and all my software, including the drivers for the Wacom, are current.
Something with Pivots? I haven’t tackled/solved those yet.
I’m looking forward to other user’s suggestions. Thank you!