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I think this code in winetricks causes issues with returning non-zero when changing the resolution (vd = Virtual Desktop), while the resolution change actually went OK.

In winetricks script:

        # Hack..
        if test "$cmd" = vd; then
            load_vd "$arg"
            _W_status=$?
            test "$W_OPT_NOCLEAN" = 1 || rm -rf "$W_TMP"
            mkdir -p "$W_TMP"
            return $_W_status
        fi

So load_vd actually doesn't return any exit code... I do not know what _W_status=$? is doing. But I think this is the exit code of the test command (part of the if statement).