Death screen death message doesn't hide when showDeathMessages is false

When you turn death messages off (gamerule showDeathMessages false) the death message still displays on the death screen, but not in chat

I expected it to hide the message on the death screen too.

The reason why this is important, is because maps could use diffrent death messages with the use of redstone, for example with custom weapons, and then it still shows the default message on the screen.