Google is apparently moving the Google Posts in the knowledge panel down a bit, to the bottom area of the local knowledge panel. This was first spotted by Mike Blumenthal and Ben Fisher and posted by Joy Hawkins in the Local Search Forums.
Here is a screen shot from 2017 where Google Posts showed up right below the address information:
Here is where it shows up now, almost all the way at the footer of the knowledge panel:
I guess Google Posts are not all that important for Google anymore?
Forum discussion at Local Search Forums.
Note: This story was pre-written and scheduled to be posted now, I am currently offline for a holiday.