Bug 274828 – REGRESSION (iOS 17.0-17.4?): Zooming and scrolling break on baidu.com

• Status: NEW
• Component: Scrolling

[Ali Juma]

This was originally reported at crbug.com/342446324 for Chrome on iOS, but also reproduces on other browsers on iOS (I tested on iOS 17.5 in Safari, Firefox, and Edge).

This does not reproduce on iOS 17.0 but does on 17.4+.

Steps to reproduce:
1) Visit https://baike.baidu.com/reference/1603667/9d2aOhaqcu1GSI-fs51AQzCLGC5YPgcKZrRUpGQE4p-8QgOI1F-nrZ9KhdTKhNTJH_gTeRAxTjE-WFrZSAg

2) Zoom in all the way.

3) Scroll all the way to the bottom.

4) Try to zoom out or scroll back up.

At step 4, zooming and scrolling no longer work.

[Radar WebKit Bug Importer]

<rdar://problem/128946135>

[Simon Fraser (smfr)]

We've been able to reproduce this on iOS 16.6.1 and 17.0. Is it really a regression, or just something the site is doing?

[Ali Juma]

(In reply to Simon Fraser (smfr) from comment #2)
> We've been able to reproduce this on iOS 16.6.1 and 17.0. Is it really a
> regression, or just something the site is doing?

Oh thanks for checking, in that case the site might be doing something weird to trigger this state.

[Karl Dubost]

So fwiw on Firefox Android, and Chrome Android
accessing https://baike.baidu.com/reference/1603667/9d2aOhaqcu1GSI-fs51AQzCLGC5YPgcKZrRUpGQE4p-8QgOI1F-nrZ9KhdTKhNTJH_gTeRAxTjE-WFrZSAg

We can NOT
* scroll 
* zoom in

[Karl Dubost]

Ali Juma,

did you try on Android. 
Because I tried on Firefox and Chrome and it is even worse there, that might be a site bug to fix.

[Ali Juma]

On Android I can repro extreme slowness but couldn't get to a point where zooming and scrolling are entirely stuck (perhaps getting entirely stuck is device dependent). In any case, the site behaves poorly across browsers so perhaps we should close this as Invalid.