Unable to scroll on Ionic Serve until I restart my PC

When using Ionic Serve, after a few hours, I am unable to scroll up or down until I restart my computer. Horizontal scrolls also don’t work.

I am using:
Windows 8
Ionic V1

Does anybody know how to stop this from happening?

I think having 2 ionic lab tabs open is the cause but it doesn’t happen always so I’m not fully sure?