Using square brackets for a list of strings causes an infinite loop

It looks like the yml reader goes into a deep loop if square brackets are found for a list of strings.
This configuration cause error:

```yaml
stringList: ["test1", "test2", "test3"]
```
This configuration does NOT cause problems:

```yaml
stringList:
- "test1"
- "test2"
- "test3"
```

The example does not use a custom serializer, only a simple List\ type.