with_text_contents does not seem to be working

[caiocmello]

I don't understand what 'with_text_contents' means in the Python library. This is what documentation says:

with_text_contents (bool | None, default: False ) – Return only content items with text contents.

Then, I tried:
client.search.find(term='Titanic', with_text_contents=False)

it returned items like this one:
lepetitparisien-1912-05-17-a-i0011

When I check the item in the Web App, it does contain text

https://impresso-project.ch/app/issue/lepetitparisien-1912-05-17-a/view?sq=CgIYAgoQEAIYByABKghpbXByZXNzbw==&p=2&articleId=i0011&contentItemId=i0011