[TSVB] Time Fields selector doesn't get populated until you change the Time Picker

[marius-dr]

Kibana version: 6.4.0

Browser version: Firefox

Describe the bug:
If you change the index pattern in TSVB, the Time Field selector doesn't show any fields unless you refresh it by changing the Time Picker, even if there is data in the time interval already set. If you don't change the index pattern, there is no problem in populating the Time Field selector.

Steps to reproduce:

1. Create 2 index patterns ( .kibana and metricbeat-* in my case).
2. Set .kibana as the default index.
3. Open TSVB and go to Panel Options.
4. Change the index pattern from the default to metricbeat-*. Now it won't show any fields in the Time Fields selector.
5. Change the timepicker to another interval. Now the Time Fields selector will be populated with the date fields from the metricbeat-* index pattern.

It seems that the request to ES is not sent after the index pattern field is updated, even though it should be.

[alexfrancoeur]

@stacey-gammon @timroes this is a huge issue for any TSVB users. As of 6.4.0 you essentially cannot change the metric to be anything other than the default index pattern. It was unknown to me that there even was this workaround of refreshing the page. I see this in Chrome as well. Can we get a fix for this in the next patch release?

[jakommo]

👍 I just had a user reporting this to me

[alexfrancoeur]

This seems to be occurring for annotations as well, though I can't seem to find a workaround. Looks like you self assigned @timroes any idea when we'll be able to have a fix and backport?

Edit: Changing the timepicker seems to have worked