My title got decapitalised

I added a documentary to IMDb called "Dead in the Water: The (Attempted) Making of 'In a Violent Nature'", but the word "In" got automatically decapitalised. It should be capitalized because it refers to the movie "In a Violent Nature" and is not merely a continuation of a sentence. However, there doesn't seem to be a way for me to fix this as IMDb keeps decapitalising it.

https://www.imdb.com/title/tt43382969/?ref_=ra_gb_ln