Kibana version: 7.5.0-1

Elasticsearch version: 7.5.0-1

Server OS version: CentOS 7.6

Browser version: Chrome 78.0.3904.108

Browser OS version: Ubuntu 18.10

Original install method (e.g. download page, yum, from source, etc.): yum

Describe the bug:
I updated the stack to 7.5 from 7.4 and discover is not showing the histogram bar anymore, I've tested with a data set with timestamp dates spanning years and if the difference from the start date and the end date is wide, it will only show histogram bars when scaling on years. It worked fine on 7.4

Steps to reproduce:

1. Load a dataset with a wide range of start and end dates.
2. Test the scale options (seconds, minutes, hours, daily, weekly, monthly, yearly)

Expected behavior:
Histogram bars rendered in the discover page.

Screenshots (if relevant):