When debugging in chrome, the scripts are always paused in the debugger even if there are no break points set, and if the the pause is un-paused, it again pauses itself.
In my case, I had the Any XHR flag set true on the XHR Breakpoints settings, accessible over the Sources tab within Chrome's dev tools.
Any XHR
XHR Breakpoints
Uncheck it for Chrome to work normally again.