When connecting Compass 1.19.12 against a mongodb instance running in a docker container on the same machine started from Docker image mongo:4.0.13-xenial 

and requesting schema analytics for a collection with 432.3k documents, avg size 3.6KB, the screen will at first remain blank, see screenshot below

After switching to another tab and going back to the Schema tab, the document fields will be displayed, but no statistic for the contained data. When deep diving into nested documents, Compass will display statistics for those nested fields. Compare screen shot below:

Expected behaviour: Compass would display schema statistics without having to switch between tabs in the Compass UI first. Compass would display complete schema statistics and not only for nested fields.