Ionic 2: Virtual scroll rendering issue with sidemenu open and scroll position below top

[ionitron-bot]

Original issue by @daveshirman on 2016-12-06T18:49:35Z

Ionic version: (check one with "x")
[x] 2.x

I'm submitting a ... (check one with "x")
[x] bug report

Current behavior:
If you move the scroll position below the very top on a virtual scroll component, then open a side menu, the rendering goes bonkers.

Expected behavior:
Nothing should change about the view if the side menu is opened above it.

Steps to reproduce:

1. Make a page with a virtual scroll list
2. Add a side menu
3. Scroll down a bit
4. Open the side menu and see the rendering knackered.

Note: Only appears to happen on my Android handset (Chrome). Not on desktop. Haven't tried iOS.

See gif:

Ionic info: (run ionic info from a terminal/cmd prompt and paste output below):

Davids-Air:apphazard-app daveshirman$ ionic info

Your system information:

Cordova CLI: 6.2.0 
Ionic Framework Version: 2.0.0-rc.3
Ionic CLI Version: 2.1.12
Ionic App Lib Version: 2.1.7
Ionic App Scripts Version: 0.0.46
ios-deploy version: 1.8.6 
ios-sim version: 5.0.8 
OS: OS X El Capitan
Node Version: v4.3.0
Xcode version: Xcode 8.1 Build version 8B62