DNS15 Formfiller vs firefox 57/58 for context specific grammar

[reckoner]

If you are using a context specific grammar via AppContext in dragonfly, I have discovered that DNS15 hijacks the context of firefox 57/58 with its own formfiller.exe application. Thus, if you want to use this kind of context specific grammar management, then you have to disable formfiller.exe.

It took me a few days to figure that out.

Just FYI.