UE4_ Editor UMG close window cannot destroy UMG immediately

Problem description

function UMG, Make it appear in the viewport

The effect is as follows ：

Click the close button , Run the... Again UMG, Make it appear in the viewport .

By means of c+ Get the UMG The number of , Found quantity is 2, Not as expected 1. Cause the code to appear bug.

Change the way

The screenshot is as follows ：

This solution is not all utility programs , Because the previous partner created the umg The logic of is placed in the following position , Use path mapping to create .