diachedelic

Can you create a reproduction on e.g. https://codesandbox.io/ please?

I can't replicate on Firefox v81 on MacOS - seems like a Firefox Mobile bug. Can you use devtools or something to find out what the gap consists of (e.g....

This looks very much like a bug in Firefox Mobile - if you can find a workaround we might be able to use it.

@adamwych Looks like `https://bodyscrolllock.now.sh` is deployed with an old version of the library. @willmcpo is this meant to update automatically?

@willmcpo I would be inclined to use a `postpublish` hook rather than CI for this, that way the demo will always be running the latest version of the package.

Looks like a regression of this well known bug: https://benfrain.com/the-ios-safari-menu-bar-is-hostile-to-web-apps-discuss/ - I wouldn't be surprised if it's already sitting in the webkit bug tracker.

Rather than setting a CSS variable, could the `reserveScrollBarGap` option accept a function, which could then be called with the updated `scrollBarGap`? E.g. ```javascript disableBodyScroll(targetElement, { reserveScrollBarGap: ({ scrollBarGap })...

Do you mean a Cordova app or similar? If you inspect the DOM via [chrome://inspect/#devices](chrome://inspect/#devices), do you see something like ``?

I cannot reproduce on an iPhone 11 running iOS 13.3 in the simulator - does this only occur on real devices?

Ok I will try it out on a real iPhone running iOS 13 and will see if I can reproduce