Yes, it is true. This bug
has been fixed in revision1941 :lol:.
// OK... this was the strangest/silliest/most-frustrating bug ever in the computer programs history...
// Under wxGTK it seems that if you try to Check() a menu item if its container Menu is disabled,
// you enter an endless message loop eating 100% CPU...
// DARN!
// This fixes the dreaded 'linux-hang-on-close-project' bug.