Are you guys working on the possibility to extend the HUD on the corner of the ultra widescreen monitor? After the last UI update the button on the graphic setting page disappeared. Since then I'm racing with the default HUD overlying the lateral mirror position
There is deliberately no longer an option to stretch the HUD for wider screens. These need to be supported by HUDs designed for those resolutions, which users are able to do but ideally the game will provide the standard ones in those ratios too. As confirmed by Devin. My opinion in italics.
Before the last UI update it was possible to extend the HUD to the edge of the screen (in the red areas of the attached picture) simply selecting the option "extend HUD" in the graphic setting page