Dynamic lights don't appear until after a save/reload

youtube.com/watch?v=bA2xrS9qamE

This lighting issue seems to happen every time there’s a dynamic light that’s supposed to be switched on, like the fire that gets switched on by the valve in Apprehension or this fire that starts when all the explosive crates explode in Power Up. The light doesn’t actually appear until I save the game and load a save where the light is already supposed to be on.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.