As of 1.18.2 on the PS4, I'm still having this issue on a realm managed by a friend of mine, where most of the bedrock around y=0 has been replaced with deepslate except for a few clusters of bedrock here and there. I really hope this can be resolved soon, seeing as how this is quite frustrating when trying to clear out an area reaching to -y levels.
As of 1.18.2 on the PS4, I'm still having this issue on a realm managed by a friend of mine, where most of the bedrock around y=0 has been replaced with deepslate except for a few clusters of bedrock here and there. I really hope this can be resolved soon, seeing as how this is quite frustrating when trying to clear out an area reaching to -y levels.