Creating SampleTypes through the API doesn't update the "outer" title properly

[Perseus]

Steps to reproduce

Send a POST request to the /sampletype/ route with 'title' as one of the fields

Current behavior

Creates the sample type but the "outer" title isn't the same as the inner title

Expected behavior

Both titles are the same and hence are reflected everywhere else in the application

Screenshot (optional)

^ This is the "outer" title

^ This is the "inner" title