In full screen mode after a restart, when the mouse is first moved, the emulated pointer jumps to the location that it was before the restart. Disturbing, but not damaging.
No further information is available; it's also possible that this issue has been addressed in the time since that 2007-07-14 revision.
From the original project's
BasiliskII/src/MacOSX/ToDo.html:No further information is available; it's also possible that this issue has been addressed in the time since that 2007-07-14 revision.