Modpack version
E6 0.3.13

Describe the bug
Subspace Bubble (travel 7km via the nether) and How Did We Get Here (all vanilla obtainable effects) are not obtainable for some players. I even tested it here with the admin. Entering the same portal, exiting the same portal; he got the advancement, I did not, after travelling 16km via the nether. Earlier I got all potion effects, I looked to see if any effect went away before I got my last one, and while that didn't happen, no all-effects advancement either. Other advancements, both vanilla and modded, do still work for me,

There's not really anything we can do here, we didn't alter them nor alter how advancements trigger in any way :/
Edit: But thanks for the report.

Something to add; admin showed that with commands I can be given the advancements, and since I noticed not getting advancements when I should have, I did get others in a natural form.