When resting without a tent or bed, energy values do not recover.
First spotted the issue in 0.9.053, figured it might have been patched out in 0.9.054. When it wasn't, posted the issue here.
I first noticed it on a brand new character in the first dungeon (so zero soreness and no 'Cum Thirsty' perk). The issue is the same on my other save files in this version.
Seems to be solved now. No idea why when I would rest before I would recover 1 or 2 energy or sometimes none. Regardless, doesn't seem to be an issue anymore.