I've recently run into an issue where my subtypes in a related table are not working in Web App Builder. They work fine in Collector, but when trying to create records in Web App Builder they only half work.
The subtype field itself seems to work (there is a drop down for it), but when you choose one the related fields that should change domains just populate to 'null' and don't produce any dropdowns.
I know for subtypes on feature layers, you have to symbolize based on the subtype field for it to work. But a table doesn't have symbology. I've tried to set editing templates, but again, tables don't have editing templates.
Is this just a limitation of Web App Builder? Or is there something I am missing?
Update January 2021: I am still trying to find an answer to this question. Any help would be appreciated.