Hi
We have the same phenomenon too.
One single event messes up all fields. If searched without that event, everything works great. As soon as the specific event is loaded, the following happens:
The list of fields on the left seems normal at first glance, numbers on the right of each field indicate number of different results as usual
When clicking on a field link, the box shows up and the field is named "undefined"
Although the field should have 19 different values, there shows up only one value "null" with 100% occurrence and count=5, for each field!
Below the title in this box it says: "1 Value, 0.001% of events"
When shortened the timerange, I even get "1 Value, 0% of events" on 112 found results. How can it have a value but not affecting any event? Still, the value is "null"
However, analysing the data still works. So a | stats count by shows data and count with proper values, even with the evil event!
This happened to me for the very first and only time. When comparing the two events, I don't see any differences in the pattern.
I'm sorry but I'm not allowed to share the events because of data privacy reasons.
I still hope this might help for further investigation.
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