Weird visual glitch when using an OpenGl filter and streaming the game via disco

[Lava_Viper]

So I've been trying to stream this game to my friends via discord but every time I use an OpenGL filter, the screen decides to duplicate and split itself. I've tried multiple OpenGL display filters with each giving me a slightly different visual glitch. The only time it works well is when I use a non-OpenGL filter. Anyone have any ideas on why this is? This is using OpenXcom Extended 7.5.3

[Meridian]

Hi,

this is indeed a known issue, for a long time now.

However, I have no idea why it happens or how to fix it.

As far as I know it happens on all versions of OpenXcom.