We have not tested Distance 7.4 on a machine running Windows 11, so we do not have tested advice regarding your issue. However, with previous versions of Windows under some circumstances, the Results window appeared blank after a successful analysis.
You might apply the previous remedy to the "blank Results window" to see if this resolves your problem.
Open the Preferences window, look at the first tab "General" and untick the third checkbox (circled below)
This turns off the compression of Distance projects, making the file size of Distance projects larger, but this may resolve your "vanishing" results problem.
Let us know if this solves your problem.