Wasn't an original idea of Edge that it would have several different quirks modes where it would use the old IE renderer to work with old corporate websites and such to be extremely backwards compatible? Could this break things for some companies with old IE-only internal websites etc? (Not that I don't think these should have all been made to work with chrome long ago.) If they are going to try to maintain some kind of quirks mode, would that be open sourced?
IE only websites are added to the Enterprise Site List[0] by the sysadmin and will be opened in IE11, just like now. Edge has never dynamically switched engines, it just opened IE.
