I encountered a bug with the radar feature.
It seems to be an incompatibility between GraphicsLib , the radar function and AMD graphic cards.
During a fight , usually when changing zoom level, the screen goes black. The game keeps running, and parts of the UI are still there, I can even go back to the main menu which is black too except for the menu options (New game, load , settings etc ) .
After removing most of my mods but the libraries and Realistic combat and still encountering the issue, I saw this on the GraphicsLib main page :
"AMD GPUs cannot run Combat Radar and GraphicsLib shaders at the same time (black screen!)
If you use an AMD GPU, disable Combat Radar or disable shaders."
I didn't have Combat Radar installed, but then I remembered seeing a "Radar.json" in this mod's config files. And I do have an AMD card.
And indeed, setting "enabled":false in that file solved my black screen issue.
It might be a good idea to add a note about that in the first post, just to avoid future headaches for future users
Apologies if this is well-known and I just missed the information entirely ^^