I have a 2467DH V.28 that recently developed some odd behavior. If the switch goes to 100% then the lights on the switch all blink several times. Turning the switch off and the lights respond with no problem. However if I program the switch to only go to 95% load using my ISY994i then there doesn't seem to be an issue.
I have reset, restored and reprogrammed and it doesn't seem to change the behavior.
I recall a time when the switch and load and less flashed when turning them on manually, though it seemed to respond to commands from other devices. I don't recall ever being able to solve that one and ended up replacing the switch.