Bug 197611 - 'background:transparent' don't reliably work in IOS 12.2
Summary: 'background:transparent' don't reliably work in IOS 12.2
Status: RESOLVED DUPLICATE of bug 197654
Alias: None
Product: WebKit
Classification: Unclassified
Component: Compositing (show other bugs)
Version: Safari 12
Hardware: iPhone / iPad iOS 12
: P2 Normal
Assignee: Nobody
Keywords: InRadar
Depends on:
Reported: 2019-05-06 06:36 PDT by 刘桂彬
Modified: 2019-05-29 19:12 PDT (History)
4 users (show)

See Also:

video (2.06 MB, video/mp4)
2019-05-06 06:36 PDT, 刘桂彬
no flags Details
Testcase (1.62 KB, text/html)
2019-05-11 11:47 PDT, Simon Fraser (smfr)
no flags Details

Note You need to log in before you can comment on or make changes to this bug.
Description 刘桂彬 2019-05-06 06:36:59 PDT
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
Comment 1 Radar WebKit Bug Importer 2019-05-07 13:13:54 PDT
Comment 2 Simon Fraser (smfr) 2019-05-07 13:27:17 PDT
It looks like we're failing to update "contentsOpaque" on the header.
Comment 3 Simon Fraser (smfr) 2019-05-11 11:47:30 PDT
Created attachment 369655 [details]
Comment 4 刘桂彬 2019-05-29 18:27:08 PDT
(In reply to Simon Fraser (smfr) from comment #3)
> Created attachment 369655 [details]
> Testcase

Thanks for reply

Some more details:

After we add css property "box-shadow" on the header,this bug can be fixed

Comment 5 Simon Fraser (smfr) 2019-05-29 19:12:52 PDT
I fixed this via bug 197654.

*** This bug has been marked as a duplicate of bug 197654 ***