Aid spell not working correctly

Level 1
2 years ago

The spell Aid should increase both current and maximum hit points.  When cast it does this, however after loading a save, resting or travelling between areas that require loading screens, the characters have the correct maximum hit points but the increase is lost.

For example, a 20hp character will have 25hp when the spells is cast, then after a short rest they will be on 20/25hp