Ios storyboard Appears Suddenly in Die Blaue Grenze

  ios, question

None of the previous ones had this problem. Today, when the storyboard was opened, a large number of Die Blaue Grenze suddenly appeared, as shown in the figure. Seek advice from the great god图片描述

Let’s see if it’s a showboundaries problem.
Select storyboard and click editor-> canvas-> show borders rectangles in the menu bar to uncheck
The default is this图片描述