Small glitch when using AMOLED

I can turn AMOLED on and off with no difficulty but discord always crashes after i change its setting. Whenever i open AMOLED mode on my phone it works fine untill i try to go back to the previous page, when i do the app crashes and when i reopen it AMOLED is turend on, then when i turn it off the app crashes again and when i reopen it AMOLED is turwnd off. I dont know if this is a bug or if changing the setting is supposed to close the app but any explanation would be helpful.