There is an issue with the Client Light in Singelplayer

There are some blocks that have a light level of 0 even though it is daytime. Grass has a normal light level, but blocks like dirt or stone have a light level of 0. It seems like it's not a big problem, but unfortunately it can cause mobs to spawn on a stone platform even though it is daytime. I have a link to my video where I try to explain it and show it to you. https://www.youtube.com/watch?v=wF4wqBMBWWg