Ore Stages: 2.0.38
Game Stages: 2.0.117 - 2.0.119
Mekanism: 9.8.3.390

After being triggered, ore is revealed as expected and can be mined manually, but when mining with a Mekanism Digital Miner (with ore* oredict filter), all I'm getting is cobblestone with or without using silk touch mode (mask block is stone).

I've tried with both addReplacement and addNonDefaultingReplacement. Both singleplayer and server.

mods.orestages.OreStages.addReplacement("four", <minecraft:iron_ore>, <minecraft:stone>);

mods.orestages.OreStages.addNonDefaultingReplacement("four", <minecraft:iron_ore>, <minecraft:stone>);

I've tracked it down to changes in Mekanism 9.7.4.375. Don't know which change specifically, but from that version on, it just mines cobble.

Got an issue in with Mek as well: mekanism/Mekanism#6124

Fixed, created a gameStagesFakePlayerData.json and added the Mek fake player name to it.