Ores not being replaced with UB versions?

[MechanosG]

Heya. So here's my situation. I'm working on a modpack and have several mods spawning ores. Vanilla oregen is pretty much disabled. Out of the box, UBC has detected some of the mod ore and made UBC versions (I did notice in the wiki that I'm able to add more too). However, it doesn't seem to be actively replacing anything most of the time. For example:

I've stripped away the stone in a large area. You can see by the wall, that Green Schist is the primary stone in this spot.

Yet this Goethite (pretty much vanilla iron renamed) still has vanilla stone background texture.

As you can see here, the ore does in fact exist. Although looking at it again, it almost seems like there's a Vanilla variety and a Rockhounding variety...

Managed to find some vanilla redstone ore that converted.

Yet just above it I found some that didn't.

I do have UbifyOres and UbifyRecipes set to true. Everything other than the ore replacing seems to be working. I mainly have 2 mods doing oregen. MMD Orespawn for the majority of my custom veins and Gregtech: Community Edition for it's giant spread out veins. Then several other mods have very tiny amounts of oregen here and there.

Could this be an incompatibility with MMD Orespawn? (and maybe GT:CommunityEdition although I haven't added any of it's ore yet to be certain) Or maybe I'm missing something? Seems kinda random. I think I'll add any missing rockhounding ores to UBC and test again.

MC 1.12.2
forge-14.23.5.2847
UndergroundBiomesConstructs-1.12-1.3.7.jar

(Also if you're taking suggestions for out of the box ore compatibility, Gregtech:Community Edition and the Rockhounding series would be cool adds.)

[SettingDust]

And, it is

[MechanosG]

I had to really squint to notice the different stone types in that screenshot lol. What kind of ore is that?

[SettingDust]

I had to really squint to notice the different stone types in that screenshot lol. What kind of ore is that?

Pyrotech, Fossil Ore. pyrotech:fossil_ore. BTW, left is the original

[Aang23]

MMD OreSpawn is known to have some issues... Any mod that spawn ores in an non-vanilla-like way will have this kinda of issues. That's why I've planned to change the event UBC runs on.

[LemADEC]

I can't reproduce with current indev version. It was probably related to the leak with MutableBlockPos handling.