Erratic iOS scroll issue

[timkelty]

Using Semantic-UI@2.1.7

When scrolling (usually with a fast flick-scroll), scrolling fails and iOS scrollbars show and bounce up and down.

Details:

• iOS only (can't reproduce on Android), but both Chrome and Safari are affected.
• My .pusher element is a child of body (not getting any console warnings)
• Scrollbars appear near the center of the screen, always in the same place, not relative to where touch occurred.
• Once Sidebar has been opened and closed, the issue does not occur

Here's a video of what it looks like:
https://youtu.be/hBK6V0dQ7bw

[timkelty]

I discovered this only occurs with the push transition. With these settings, it never happens:

mobileTransition: 'overlay',

UPDATE:
Scratch that, just saw it again with these settings. Seems less common, but I still get it.