After update from 1.5.18 to 1.5.19, xemacs 21.4.13 can only run from bash

I have a desktop icon for running Xemacs 21.4.13. This has been working fine. Just today, I upgraded Cygwin from 1.5.18 to 1.5.19. Now when I double-click the icon, it does nothing. I then tried pasting the path to it into a DOS cmd prompt, and it still does nothing. I then executed it directly from a bash prompt, and that worked. I have a similar icon for 21.4.18, and that doesn't demonstrate the same problem, although 21.4.18 always runs a cmd window in the background, which 21.4.13 does not.