https://bugs.winehq.org/show_bug.cgi?id=43727
--- Comment #4 from Rosanne DiMesio dimesio@earthlink.net ---
Actually, it depends on the value of DLL_WINE_PREATTACH (true/false), which varies for each dll. Generally, stub dlls set it to false (so native is preferred), but dlls with actual implementations prefer builtin.
The description specifically mentions riched20, msvcr90, and msvcp90. Wine has preferred builtin riched20 for as long as I've been using it; that's the reason for bug 14980. As for msvcr90 and msvcp90, builtin has been preferred for those since 2013-02-18 (commits 5d88f780dd4bbbde0ff27075b58321d7347f6d4b and cfec148b8baeb86ee9d775f9cf527b80e043f5a4). So the OR couldn't have simply copied those specific dlls to the program directory and have them be preferred without setting an override in 1.9.x as claimed, at least not with plain Wine.
IMO, this bug is invalid.