Non-Stone Ores Not Spawning

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Status

Fixed

Issue description

Any ores I created don't spawn if they're set to replace a block other than stone. My nether ores don't spawn in netherrack, my bedrock ores don't spawn in the overworld or nether, and my obsidian based ores don't spawn in the end overworld.

Issue comments

Could you attach an example workspace of such ore so I can check? Keep in mind that the block check is done after random possibility check so if the block is rare already (obsidian is rare), the probability of ore replacing some of these blocks is very small.