Unable to fix capitalization of titles through system (Charlie & Ben Podcast aka Dropping In with Charlie Houpert)

I added two alternative titles to Charlie & Ben Podcast. They are "Dropping In with Charlie Houpert" (new title and IMDb display title) and "Dropping In Podcast" (alternative title).

In both titles, the word "in" is being used as an adverb, not a preposition, and should be capitalized. But when I tried to submit them correctly, the system uncapitalized the word "in" for both of them.

After they went live, I tried to correct them, but the system wouldn't let me do that either.

The alternative titles should appear like this:

Dropping In with Charlie Houpert (new title)

Dropping In with Charlie Houpert (imdb display title)

Dropping In Podcast (alternative title)