[Rule question] For the Aid spell, do players keep the healing after it expires?

Aid

2nd level abjuration

Casting Time: 1 action

Range: 30 feet

Target: Up to three creatures within range

Components: V S M (A tiny strip of white cloth)

Duration: 8 hours

Classes: Cleric, Paladin

Your spell bolsters your allies with toughness and resolve. Choose up to three creatures within range. Each target’s hit point maximum and current hit points increase by 5 for the duration.

At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, a target’s hit points increase by an additional 5 for each slot level above 2nd.

When the duration expires, players lose the change to their maximum hit points. Do they also lose the current hit points (and thus could they fall unconscious from the duration expiring)?

Reference threads I found (neither have a conclusive answer):

https://www.reddit.com/r/DnD/comments/4dvo3g/how_the_spell_aid_works_in_5e/

https://rpg.stackexchange.com/questions/175098/can-i-cast-aid-again-to-heal-creatures-already-under-the-effect-of-the-aid-spe