Sure would appreciate a little help with this issue and inquiry.
Do any of the FM Techs offer help here?
Since this question has gained traction in:
FileMaker Technical Network > Developer Forum > Layout Design > Discussions
It hereby is marked as "assumed answered" with the redirect noted above as several ideas have been offered that now are being tested for the cause of the screen flashing. Results are not final but will be reported back in TopicID=95977.