Form does not show all the fields when data come from schema injection

[gsambrotta]

Problem

When a form block is used to display various fields coming from an injected schema (not static data), the form block display only the first field. To display all the fields, the form block needs to be updated (i.e. by clicking the "Update" button)
This bug occur when a schema is saved to a context and then used in the form with a context reference.
It might be a problem with schema injection or with the context. Further investigation is needed.

Example

Here is an example where schema/context injection not working properly: https://app.kendra.io/form/formTestBug

Error

An error is logged in the flow:

main.df743c2a398a6134.js:1 TypeError: i.setControl is not a function
    at main.df743c2a398a6134.js:1:658307
    at ph (main.df743c2a398a6134.js:1:658837)
    at Lu (main.df743c2a398a6134.js:1:658282)
    at nx.addFormControl (main.df743c2a398a6134.js:1:687996)
    at nx.onPopulate (main.df743c2a398a6134.js:1:687464)
    at main.df743c2a398a6134.js:1:656002
    at Array.forEach (<anonymous>)
    at Ad._buildForm (main.df743c2a398a6134.js:1:655975)
    at main.df743c2a398a6134.js:1:656060
    at Array.forEach (<anonymous>)

These lines of code might be relevant:

kendraio-app/src/app/blocks/form-block/form-block.component.ts

Line 98 in 129c3a8

updateForm() {