[Modal] Scrolling should work after closing a modal with the focused input

[sa16ot]

Steps

1. Use a mobile browser (tested in Firefox, Chrome, Opera, Opera mini) on Android
2. Open a modal, which are small enough to fit the page (without scrolling) and has an input
3. An input got focused (or you should focus it manually, if your modal has autofocus: false), so an android keyboard appears
4. Close the modal
5. Now you can't scroll the page

If you close a keyboard (or e.g. blur an input) before closing the modal, the page would scroll normally

Expected Result

User should be able to scroll a page after closing a modal with inputs

Actual Result

User is unable to scroll a page after closing a modal with inputs

Version

2.4.2

Testcase

For a phone with 720x1280 screen resolution there is a testcase:

1. Go to https://semantic-ui.com/modules/modal.html#full-screen
2. In section "Full Screen" press "Run Code" (We don't really care about a fullscreen modal, our case is a modal with inputs)
3. Feedback textarea got focused and an android keyboard appeared
4. Press close button

P.S.

My workaround is to edit file src/definitions/modules/modal.js (line 428)
( hideModal - $module.transition - onComplete )
add the code
module.unbind.scrollLock();

[andrewheadricke]

Setting {duration: 0} is another workaround.