I've been looking at the Spring '20 release where Salesforce introduced the new lightning/pageReferenceUtils module to be used alongside with lightning/navigation to pre-populate the fields when creating a new record. Here's a reference to it.
I'm currently developing a LWC, trying to pre-populate a form with default values using the lightning/navigation. The problem is the pageReferenceUtils module's utilities for encoding and decoding default field values are not yet supported in the Salesforce1. Has anyone been able to find any workaround to that yet?