IOS UI Image artifact

As the UI is updated, all of UI vertex and texture UV tear occurs…

Occurs only in IOS environments and does not occur when [DefaultEngine.ini] bSupportsMetal = false…

But I do not want to change the metal config…

How should i solve it?
Help me.

My team is experiencing excactly the same issue on iOS with metal enabled. Could any one from epic shed some light upon this issue?