I started a massive platform of bedrock and I'm nearing the end but started noticing random chunks of bedrock are disappearing. I don't see any pattern but they are large chunks. I am building in the snow region of my map but I didn't think snow would dissolve bedrock after a time.
I also have a lava pit underneath the platform so maybe that will affect it as well? I was under the impression that bedrock was indestructible outside of creative mode but maybe things affect if in creative mode?