i don't know did, default behavior quick action brought ctrl + '.' qualify referenced type namespace opposed adding new using statement @ top of source file. while works, annoying (especially when referencing same namespace repeatedly in same source file).
example: if type isometype code suggestion like:
"replace isometype my.namespace.isometype"
where prefer is:
"{}+ using my.namespace"
i have been searching through various settings , options without luck (note: occurring while editing c# / .cs files , not related mvc/razor [for have seen open bugs]).
shutting down ide , restarting ended fixing issue. weird.
