Chest are transparent textures look broken and previously outlines where remarked

Hi, I've had this issue for a while now, and everything was alright when my minecraft was in the 19w39b snapshoot, but for some reason it changed back to 19w39a.

First of all, the latest snapshoot 19w39b doesn't appear as the latest anymore, so I can't use it, and second, even before this, the outlines of all the objects in minecraft were really black and the sprites were all broken and bugged out, I dealt with this by ignoring it but now my chest are bright and transparent, everytime i break a block, the breaking animation is bugged out and even the water animation is sped up drastically. The animals are also dark toned now for some reason.

Please help