Extra Milestones Unobtainable Milestone Requirement

Been delving heavily into mods and have been enjoying several @AndreAquila mods. In this case the extra milestones mod, I've been grinding my way through the infinite inventory milestones. Got up to "Infinity - 81" before it asked for an unobtainable resource. Is this an unintended bug/typo or a side effect of using 100+ mods?