(Ok update to my issue found whats happening to the lava bug in the picture broken.jpg this keeps happening. In the picture old way.jpg what it use to do put a block in the middle from falling lava water mountain generator. also this use to work just fine when bedrock switch came out but now dose not work)

I was trying to make my build of redstone lava water mountain generator for a YouTube video but not able to. Lava has a issue not flowing like it use to in the picture lava.jpg every time the cobblestone gets this far wont flow over