Hiding arms causes vertices sticking out

Hallo

When I select the Arms and hide them after mark them with seams there are edges sticking out…does anybody know this strange behaviour?

When one Island is selected, the contiguous edges are selected too.

Thank you for your help

  • mastart replied

    NeverMind, you just answered my question in “Unwrapping the Melvin Character pt. 2” at 4:01


    Thank you 😊