Dynamic Mapping should not tokenize values

I’m using dynamic mapping to ingest a JSON object with a field of an array of JSON objects. If the array element has a field with value that has -, _, #, etc. delimiters in it, e.g. a uuid, querying against this field will result in the error:

“SplitSearchError { error: \”Invalid query: The field ‘_dynamic’ does not have positions indexed\”…}”

Steps to reproduce (if applicable)
Steps to reproduce the behavior:

1. Set up index config to use dynamic mode
2. Ingest an object with an array of objects with a field mapped to a uuid 3.
3. Execute a term query by matching a uuid.4.

Expected behavior
I should get a matching document as a response

Configuration:
Please provide:

1. Output of quickwit --version v0.3.1nightly
2. The index_config.yaml
   version: 0
   index_id: foo
   doc_mapping:
   mode: dynamic
   field_mappings:
   -name: id
   type: text
   tokenizer: raw