I'm facing the same issue, index-pattern present in the index .kibana ( I can get them when curling elastic) however when I tried to access "Saved Object"kibana return a 400 Bad Request.
And elasticsearch have error logs that pop at the same time :
Caused by: java.lang.IllegalArgumentException: Fielddata is disabled on text fields by default. Set fielddata=true on [type] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead
So it seems that the template for .Kibana isn't correct ?
As we are a lot facing this, I opened a github issue on this :
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