It should be “22 février” in that order and without caps. I have to say the year would be nice to display too (at least in my case… I’m ready to bet that people are going to print them).
Is there any place where you would write a date like this in French?
I think it’s a translation issue. The German date is 22. Februar. In general, the date formats are not that easy to find. I will update once I find the right text. But it may affect other places too, hence my question.
I found the texts. I think there is more than one. If you search for datetime_formats in your site text (this might be helpful for testing) and on Crowdin, you should find them. They are difficult to read, but I think switching %B (full name of the month) and %-d (number of the day without a leading zero) in the cases where B is in front of d should improve things.
To change the months to lowercase, you need to change the month_names (I cannot find them in the site texts admin search, but you can see them on Crowdin). But I don’t know if this will result in unexpected lowercase month names somewhere else (Is there a case you write them with a capital letter in French?)