Grav and URL queries

Is it possible to make Grav correctly work with URL queries?
Actually, somehow Grav partially works with URL queries, but not always.
If the url would be, for example, like site.com/page?download=1&format=2 it will work, but if you will add extension site.com/page.html?download=1&format=2 it won't work.
Another example is simplesearch plugin:
site.com/search?query=somesearchtext — will work
site.com/search.html?query=somesearchtext — won't work
site.com/search.json?query=somesearchtext — won't work

Please create an issue for this: https://github.com/getgrav/grav/issues

Done: https://github.com/getgrav/grav/issues/194

Cheers!