Closed captions only showing some captions.

I wasn’t sure where to post but I guess this is the best place.Sorry if I posted in the wrong section.I noticed how even with full captions enabled,a lot of captions don’t display.
In HalfLife 2:

You can see the captions displaying npc sounds,weapon sounds and even burning fire sounds.These don’t seem to display in GMod.There is only dialogue and the “Beep beep beeeeeeeeeeep.” caption when a player dies.But why?Is this a bug on my part?Is it a bug on everyone’s part?Was it removed entirely for some reason?I’m curious.

Bump boom baff

Another bump because this is getting really irritating.When I can’t have sound,I don’t know what’s happening.And I don’t know if this only applies to me.