Hi! I'm Working on PERSIAN Translation for TMDB Website, and I'm alone! One of the reason that this happen to RTL languages is that the website(s) are not supporting well. If you look at the Wordpress well, you will see that they have an special "rtl.css" file for RTL languages that will help changing website layout to an RTL structure, and I really hope that you do something like that for TMDB.

Something like this: http://s9.picofile.com/file/8292379126/screencapture_themoviedb_org_1492490300970.png