Created attachment 369122 [details]
Since IOS12.2 relased ，our pages occur a bug like this：
visit page below in safari and scroll the page , you can feel
Depend on the distance that user scroll ，we change the css propety 'backgound:transparent' on the target dom node ，but it seem's not always work as we expected
This bug only can be seen in those device that upgrade IOS12.2
It looks like we're failing to update "contentsOpaque" on the header.
Created attachment 369655 [details]
(In reply to Simon Fraser (smfr) from comment #3)
> Created attachment 369655 [details]
Thanks for reply
Some more details：
After we add css property "box-shadow" on the header，this bug can be fixed
I fixed this via bug 197654.
*** This bug has been marked as a duplicate of bug 197654 ***