The point is as follows as I can see it: WINE forwards to Dosbox to handle dos executables. As you can see e.g. in https://bugs.winehq.org/show_bug.cgi?id=7848 the issue is: "I downloaded and tested the 4 apps from comment 4 in 1.7.50, and Wine successfully starts all of them in DOSBox svn r3932. My …

The Windows compatibility layer WINE which enables us to run windows programs on Linux systems uses Dosbox for its dos compatibility. Unfortunately the latest release of dosbox has a bug that bugs Wine users: https://bugs.winehq.org/show_bug.cgi?id=18118 So as a Wine user you rely on using Dosbox …