How to hide Blue line covering views in xib/Storyboard in Xcode 7.2

I am using xcode 7.2, in xib when i insert any view, label,txtField etc., all are showing this covering blue line. now it is very hard to insert/manage new view or anything in xib due to this line. Does anybody know how to hide these?

Same thing happened to me. In Xcode: Editor > canvas > show bounds rectangles. This option show/hide the blue lines.

If you found this one not work first time, try twice toggling the show bounds rectangles option. Some time this is not work in first time.

For Xcode 13 and Xcode 12, repeat this step 3 times. XCode: Editor > canvas > Bounds rectangles.

For Xcode 11 and Xcode 10, repeat this step 3 times. XCode: Editor > canvas > show Bounds rectangles. This is a bug in Xcode 11 Xcode 10.