Just wanna know if anybody has the same issue as mine: Xcode adds a lot of tags into the storyboard I touch. I try to remove but I can\'t because it keep adding those tags
Confirmed to be fixed on Xcode 7.2 live version (released Dec 8 2015)
As of Xcode 7.2 Beta (7C46I) released on 10/28/2015, just like these tags were added automatically when opening a Storyboard or XIB file in Xcode 7 or 7.1 on El Capitan, these tags are now being removed automatically by just opening a Storyboard or XIB file. (It now seems that the addition of the tags may have been unintentional.)
As this has caused some issues with modifications to Storyboard and XIB files within some of my teams I recommend that if you're working with multiple people on a project that you a) coordinate to all use the same version of Xcode and b) coordinate a time to switch from Xcode 7.1 to 7.2 to avoid unnecessary merge conflicts.
XIB file showing these tags removed after opening with Xcode 7.2 beta: