Portaling the trail results in an unusable portal

Reproduction
Start the trial in act 2, portal out of it at some point (in my case because my inventory was full). After dumping all my stuff in stash, I tried to go back but the portal is non-interactable.

Edit: once you get back you seem to be able to resume your trial as normal, which is awesome, but is poorly conveyed in the game. You could reset the chamber as the player portals back in, or have the portal transport the player to the entrance of the trial.

Workarounds
Make sure that you always start a trial run with an empty inventory so that you don't have to portal out like I did.

Suggested solution
Either:

1. Allow players to portal out of the trial to clean their inventory and have portal back reset the chamber
2. Warn players that portaling does not work during a trial and explicitly prohibit portaling out of the trial.

In hindsight it stands to reason that portaling wouldn't be allowed (both mechanically as in-fiction) and I see now that there is a stash available at the start, but it doesn't attract any attention. You could consider placing the stash chest more prominently in the path of the player to make the cycle a little smoother (if you start after a failed attempt, put the chest between the starting position and the altar so players always walk passed it).