For some reason the color wheel of the post processing is broken in my version.
Whenever I want to change the colorgrading and start to drag the color wheel thingy, it starts to move to the top left. Moving the mouse will kind of move the icon of the color wheel, but will still favor the top left.
I have not tried reinstalling URP yet, but still wanted people to know.
The bug happened at Unity 2019.3.0f6.
After upgrading to Unity 2019.4.3f1 the bug still is there.
Now I am using URP 7.4.1, with no success
No, this bugs been reported and “they are aware of it” has been reported like a month ago. Apparently it is fixed in Version 9 preview 14, but still no backport to LTS, kind of sad. You can downgrade to 7.3.1, should fix it. You can follow the thread here: Lift gama gain bug || 19.4LTS
Oh nice, wish I knew that before I went on a hunt to reproduce the bug. Just as I found out that 7.3.1 fixed it, I refreshed the page and saw your comment.
Good to know they are aware of it.