Github user ruffle1986 commented on the issue:
https://github.com/apache/metron/pull/1172
I think the problem is that we use the same validator function for both the
start and the end date.
So after putting it into an invalid state (step 2), however you add a valid
time to the start date, the validator function will complain because the end
time is still in an invalid state. That's why the start time is still marked in
red.---
