JSONSchema oneOf properties with initial values

[jma]

Description
When the editor with a JSONSchema oneOf property is loaded with an initial model, the wrong option is selected.

Minimal Reproduction

In this example, the model value correspond to only one option: the second. But the editor select the first option.
https://stackblitz.com/edit/angular-157bka?file=src%2Fassets%2Fjson-schema%2FoneOf.json

Your Environment

• Angular version: 7.2.16
• Formly version: 5.5.15

Additional context
This is probably due to the fact that the two oneOf options have the same name property. This is probably not easy to solve as the additionalProperties should be checked.

[aitboudad]

The following PR #2196 improves the select oneOf which takes account of the number of matched model properties (the highest is selected).

[aitboudad]

oneOf try to select the valid option first so if you want to rely on additionalProperties, just define additionalProperties validator in your project and it should work as expected without waiting for the above fix.

[aitboudad]

This issue has been fixed and released as part of v5.6.0 release.

Please let us know, in case you are still encountering a similar issue/problem.
Thank you!