[Bug 45611] New: 64bit prefix: copy file to system32 incorrectly copied to syswow64

https://bugs.winehq.org/show_bug.cgi?id=45611

Bug ID: 45611
           Summary: 64bit prefix: copy file to system32 incorrectly copied
                    to syswow64
           Product: Wine
           Version: 3.0.2
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

How to reproduce:
wine cmd
Z:\home\me\0_wine>
C:
echo.>00aa.txt
copy 00aa.txt c:\windows\system32
dir c:\windows\system32\00aa.txt

result:

Volume in drive c has no label.
Volume Serial Number is 0000-0000

Directory of c:\windows\system32

8/11/2018   4:57 PM             2  00aa.txt
       1 file                         2 bytes
       0 directories    351,430,549,504 bytes free

find . -depth -name 00aa.txt

result:
./syswow64/00aa.txt

wine xcopy is also affected.
I think this is the reason why .NET Framework 64bit don't install.

System:

wine 3.0.2
fedora 28
kernel 4.17.12