Graph panel - bars in log scale - issue

Grafana Elasticsearch
1

Hi guys,

I’m using Grafana v. 6.3.0 with included GraphPanel. Datasource is Elasticsearch 7.1.0
Graph is set to show Bars in scale log (base 10).
Look at attached picture. What could cause this problem ?

image
image1540×230 27.7 KB

Thanks !
Ged