I updated CS6 Dreamweaver today to resolve a crashing bug... which it didn't. While updating, Edge inspect was updated as well. since the update, media queries fail in the Weinre interface. I have read the known issues about multiple media query blocks in a single CSS file, which I was doing and it was working just fine for me. Now... NADA. The queries do NOT execute. I tried moving the css into separate files and loading them conditionally, but both files now get loaded, and the latter always get the priority.
update: I uninstalled and reinstalled version 1.0.388... still not working!