Rtl* functions should generally avoid doing server calls. You should implement the Rtl* functions on top of the Nt* functions, not the other way around.
the "real" fix would mean (which I decided not to implement) - not moving local atom tables to wineserver (and handling them in the local memory) - that would by the way allow to use the internal representation of local atom tables - then, just Nt atom related functions would call wineserver
Deciding to keep the code in one place (wineserver) leads to the Nt -> Rtl calls. A+