About ZOrder on mobile of Webbrowser

In the editor, the drawing order is the specified one. Webbrowser is displayed after the image.
Webbrowser is displayed in front of image when viewed on mobile.
Even if the ZOrder of the image is set to 100 and the ZOrder of the Webbrowser is set to 0, the result does not change. Can anyone please tell me if you have a solution?

I also encountered such a problem, do you have a solution?