This is also an issue in 1.13.1 mcpe, the effect of drinking will apply but the animaton will continue until you release it, very easy to reproduce in my case at least, happens every time I need to remove "bad omen".
Also observed in seed -882157768738008747 at coords -740 ~ 1286
Also featured in seed 66963043752560728 at worldspawn.
This is also an issue in 1.13.1 mcpe, the effect of drinking will apply but the animaton will continue until you release it, very easy to reproduce in my case at least, happens every time I need to remove "bad omen".