Weird sevtech oddity?

Terra M Welch

New Member
Oct 17, 2019
17
19
4
Playing Sevtech Ages
Anyone else who played sevtech encountered this oddity? This item wasn't a disabled unfamiliar item before now, but now suddenly it is. Note I'm playing the latest sevtech(the hotfix from curseforge) which has not updated since I first started playing sevtech.

20191209051414_1.jpg
Why is this item suddenly unfamiliar? Anyone know why this is the case? Just wondering as the item in question wasn't an essential one(or even useful.) but it is weird that suddenly it's disabled.