After searching for some time, the only "Tiberium" mod I could find that was updated to 2.0 was this one:
https://mods.factorio.com/mod/Factorio-Tiberium
If that's the case, then the issue was "tibGrowthNode" - a dummy resource that the mod maker is using to grown their Tiberium resource field. This produces Tiberium Ore anyway, so I don't need to parse it in the first place. I couldn't come up with a good way to filter this out procedurally, so I just added "tibGrowthNode" to my table of excluded resources, for when the "Factorio-Tiberium" mod is active. I'd already set this up to exclude Scrap, so it was simple enough, albeit not a great way of handling it.
Long story short, fixed in 1.1.1.