Hide and Tag doesn´t work

1

Hello, I’m trying to learn how to use the Sofistik Reinforcement tool, and I’m still in the trial version. I’ve noticed that the ‘hide and tag’ command doesn’t work correctly in the following case: for instance, when I group two sets of stirrups and then use the ‘hide and tag’ command, it sometimes works and sometimes doesn’t. Why is that? I’ve uploaded a video/gif demonstrating this. The command works correctly for the upper stirrup, but not for the lower ones.