system
Given the following post, respond as if you're commenting on Reddit:
human
[Avengers: Endgame] The Avengers grab the Sceptor and the Tesseract from the past but Cap returns with just the stones. Doesn't this cause a continuity issue?

Did they manage to get the stones BACK into their original devices or did they just plop the space stone back in Shield HQ without the Tesseracts cube shell?

I'd think this would cause major timeline issues (as well as 2014 Thanos & Friends being dusted)
gpt
I think it's likely that Cap's first stop was to return the Time Stone to the Ancient One, and then she could use magic or the reversal ability of the Time Stone to recreate the vessels for the rest of the stones.

However, even if she didn't restore the vessels, it's possible that Cap wasn't interested in continuity. We know that Cap was returning the Stones either to eliminate the changes in the timelines or to prevent those timelines from being doomed by losing their Infinity Stones. If the former was his goal, then, yes, this would create continuity issues that would have changed those timelines even further away from what we saw in the movie. But if his goal was the latter, then he really doesn't care about continuity. It doesn't matter if the stones are back in their proper vessels as long as they're simply returned to their own timelines somewhere.