So just had a session where in the beginning started with four potions of healing.  After fight with a ghost and three drow, I and my Rogue had to use 2 of the healing potions.  I go to remove 2 of the potions but instead of removing 2 I accidently removed all 4.  So in an effort to readd two healing potions back on the app, I couldn't find "Potion of healing"  nothing would come up.  I figured the app was being goofy and just tried adding potions when back onto my laptop.  When I search for "Potion of Healing" I get all the upgraded versions (greater, superior, ect) but not the mundane version.  So I figure this is a bug that needs to be fixed right?  

Update: Must of been a bug cause I am able to re add the two potions as they are showing up in the add inventory search again

It is. I tried building a character yesterday and the regular (common) version of the potion is gone.

I built a character today, and just added a regular legacy potion of healing, I do not have the new PHB, so I can't speak to that rulesets potion availability. 

I have the new PHB and I could add the legacy Potion of Healing no problem. I cant access the 2024 potion of healing because of bugs.