[Bug 50879] New: STDOUT output lost from Winelib applications in Wine 6.5 because of start.exe

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50879

Bug ID: 50879
           Summary: STDOUT output lost from Winelib applications in Wine
                    6.5 because of start.exe
           Product: Wine
           Version: 6.5
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: programs
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

(split from bug 50869, see there for some other related issues)

When launching Winelib applications in Wine 6.5, all output written to STDOUT
gets lost. I tested this with a simple C++ file compiled with wineg++ that
tries
to print some text using both `printf()` and `std::cout`. Printing to STDERR
using `std::cerr` still works fine.