In the ios iphone , transparent color has error

The Image display diffefence in iphone and editor. The transparent black color in iphone is change white.

In the picture ,left is display on the iphone , right is display on the unity editor.

Image use shader: UI/Default

Unity Version:Unity2019.4.33

[189603-对比图.png|189603]

Using previous Unity 2019.4.32 helped in my case for now.