Unfold3D breaks/deforms UVs

[stha]

Hi everyone.

We are experiencing a rather odd bug with the newish Unfold3D relax engine.

I have prepared some screenshots, that may be helpful and a few workarounds. (Only 3 attachments are allowed, but I think the model and problem translates ok)

If you look at 4.jpg, you'll see that what should be the end of the straw now has collapsed to 3 edges instead of assuming a relaxed state when coming from what you see in 3.jpg.

The polygon is still visible but only if it is being selected through the viewport - so if the 3 edges (in 4.jpg) are selected (in the unwrap editor) and moved, the invisible data stays behind.

This happens throughout the model at various and always the same areas.

Although this happens at some students' computers and not others (mind you the base model is provided by us and therefore is identical) some are off the hook and can work undisturbed by this bug.

Software versions/updates are synced!

We are, however, able to fix the bug in a few different ways and all of them includes deleting or baking in the unwrap modifier. So converting to editable poly and stacking new modifiers on top will fix the issue right here and now, but we are uncertain if the problems occurs again further down the line...

Does this happen to anyone else? Mind you it is only the Unfold3D algorithm that does this, not any of the others.

Thank you.