Last night we underwent the time change and went back to winter time (Daylight saving time).
The data in elasticsearch is apparently correctly indexed however Kibana displays a gap when the time has changed.
This is something that is definitely not wanted, looks like a bug in presenting data. However, since you are using quite an old version of Kibana, it's very likely this bug has been fixed in the meantime. I'd suggest upgrading to a 7.x version if that's in any way a possibility for you.
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