>Development wise, we test for Edge ocasionally and so far we haven't come across Edge-specific quirks like the good ol' days of IE.

Edge is simply expansive to test for, because at the places where i worked the only windows laptops (that are locked down like Azkaban for obvious reasons) around were those of the sales people. Majority of the developers on linux, where the designers are on macs.

Unless it is actively formalized, Edge ends up not getting a lot of testing with anything we make.