[Elecraft] KAT500 Question - Manual Mode Light is Flashing

[Irwin KD3TB]

Set up: Flex 6500 with KAT500 & KPA500 using Elecrafts recommended settings

When I have the Tuner in By-Pass Mode for an antenna with a low SWR, even
when making small changes in the frequency, the Tune switches to MAN
(Manual Mode) and the MAN light is flashing. How do I get it to stay in
By-Pass Mode.

This recently started and not sure what changed? A setting in the KAT500
Config Mode?

Thanks,
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Irwin KD3TB