Ok, so I'm only replying because this has some visibility and it might get seen / fixed at Amazon.

Everybody loves that Amazon and Prime bought and made new episodes of the Expanse, right? Well, on my stock Sony Bravia Android TV, if you are watching the Expanse with English subtitles, when the text for the subtitles is on, the screen is brighter. It's noticeable, and quite annoying, and this ONLY happens on the Expanse. Other apps and other shows on Prime work.