Pycharm Community Edition seens not work properly with rider for ue4?

I'm using rider for ue4(EAP).I have some python scripts in my project and i'd like to use ide for editing. But it seens python plugins can't set source root like pycharm or add external library(stubs) for interpreter.And other little things like disabling some PEP8 rule(W191) rather than disable the whole PEP8 checks also can't be done, which is fairly simple in pycharm(even in community edition).

Is this be design?Or it's just a bug in rider(ue4)?