In my legacy window, Underworld Aspirtant V appears as 99/100, even though i have level 100, and 800/800 points in my Galactic Season 2 progress. This prevents me from completing The Shadow of The Underworld Achievment.

Happend to me too, when opening all my 3 Thyrisian boxes from GSF reward

Based on the weekly event historic, the first 2 weeks had PVP objective, then it was 2 consecutive MM, so next week i'm guesing will be GSF again. Please fix this.

So far there's been PVP objective, with 8 medals needed in a match to complete, 4 MM FP completion, and 3 wins in GSF. 8 medals in one PVP match is way faster then completing 4 MM FP, and 3 wins in GSF is also tedious and now it doesn't even work. I bet an Operation objective will roll soon, and will be even more tedious, and not to mention impossible for FTP and Prefered players. My point is that these Weekly Events objectives should be recalibrated (from the perspective of time invested towards completion) or redone similar to the weekly that lets you choose between killing World bosses (PVE objective) or doing Ranked PVP objective (which is also impossible for FTP and Preffered).

You are right, there are 13 minutes left 'till reset, but i don't belive the Reset will fix the issue.

I've encountered problems with Ossus Weekly event for 3 wins in starfighter too. I played so far 3 matches, all wins, and no counting for the quest objective.