I am trying to add an item to our Utility Bar and I am seeing the following error:

There was an error saving the page: PropertyType cannot be specified for flexipages of type UTILITY_BAR.

I tried adding various different component types but no matter what I try to add I see the same error. 

Similar issue as - https://salesforce.stackexchange.com/questions/396841/lightning-web-component-fails-when-added-to-utility-bar