Screenshots coming out black

[TheZeux]

i use ShareX to screenshot since win + shift + s just tabs me out but now the screenshots are just black, and it also doesnt allow me to go into borderless fullscreen or something like that

[Resxt]

Play in windowed borderless

Go in the bootstrapper command prompt (the console opened when you start the game)
and paste this (right click) r_fullscreen 0;r_noborder 1;vid_ypos 0;vid_xpos 0;vid_restart then press Enter