Writing attribute "screenplay by" not being displayed correctly

There is a problem with the writing credit attribute "screenplay by."


When looking at a cast/crew list page, the attribute is not properly being displayed as "screenplay by," it is only being displayed as "screenplay."

Example:

Mackenzie (2017): 



On the cast/crew list page (http://www.imdb.com/title/tt6327622/fullcredits), it is displaying the writing credit attribute as "screenplay."

The on-screen credit is "screenplay by"



When you go to update it, it actually shows that "screenplay by" has already been entered:



And when you look at the IMDb name pages for each of the writers, it shows the credit as "screenplay by"

Sofia Astrom: http://www.imdb.com/name/nm4499334/


Jory Anast (II): http://www.imdb.com/name/nm8451269/



Daisygreen Stenhouse: http://www.imdb.com/name/nm5009069/




Leaving the "by" out of "screenplay by" is inconsistent because IMDb does display the "by" in both "written by" & "story by"





In fact,  The LEGO Ninjago Movie (2017) is a simultaneous example of both the error & the inconsistency

http://www.imdb.com/title/tt3014284/fullcredits

If you go to edit the writing credits, you discover that all the credits displayed as "screenplay" were actually entered as "screenplay by"



So this very same film page shows "screenplay" instead of "screenplay by" but does show "story by" as "story by."

If a credit is entered as "screenplay by," it should be displayed as "screenplay by."
If a credit is entered as just "screenplay," then it should be displayed as "screenplay."

This provides a distinction between two similar, but different possible on-screen writing credits.