Stefan Penner

> All versions of IE (other than Edge) have serious bugs in their postMessage support. Therefore we would likely have to limit our support to non IE browsers if we...

@hjdivad is likely a good person to pull in, as he has done copious work with iframes postMessage/messageChannel

@Gaurav0 i do like your plan of attack, I would suggest it may need to be revised due to ^^. Lets also see what @hjdivad has to say

@nicolo-ribaudo failure is occurring locally too, I will investigate & address (most likely later tonight, or tomorrow).

@nicolo-ribaudo quick-update I'll do some additional debugging this afternoon, but my initial debugging pass suggests this test failure may actually be an example of an erroneous cache miss now corrected...

@nicolo-ribaudo I believe in-fact the test failures where an example of an unstable cache key.

@hzoo / @nicolo-ribaudo what are the next steps? Anything I can help with?

@JLHwung I can switch to that 1, give me a sec.

I agree with @nicolo-ribaudo's POV.

@JLHwung additional performance here sounds great.