modal displaying under backdrop on iPhone

[dracula92107]

Hi,

I have a problem with modal on Iphone. I use Bootstrap v3.2.0
On Iphone, when I open a modal, it display under back-drop. I researched in many topic but no working.
This problem only occur on Iphone, isn't occur on PC or Android devices.

Please help.
Sorry if I post a duplicate issue.

[cvrebert]

Please upgrade to Bootstrap v3.3.7.
Also, you will need to post a JS Bin or other live example that demonstrates the problem, per the issue tempate.

[dracula92107]

Hi @cvrebert
I'm sorry, maybe my mistake. Although I haven't found the cause yet, but it's seem only occur on my project. Please remove this issue.
I'm so sorry for this inconvenient.
Thanks.

[dracula92107]

[dracula92107]

Hi @cvrebert,

I just found the root cause of my issue.
I use:
body { overflow-y: scroll !important; -webkit-overflow-scrolling: touch !important; }
in my code.
Is this similar to #17695 ?

[cvrebert]

Quite possible. (Though I haven't heard of webkit-overflow-scrolling affecting backdrop placement before, but clearly it's a bug-prone property.)