There was an issue introduced in this release that prevented quest progression when drinking the potion. This has now been fixed. Talk to the Old Hermit again, and he'll regive you the potion. Drinking it now will advance your quest progress.So, i just installed the game and after playing a little i had the exact same problem, so i did reset and tried to redo it but i talked to the old hermit before drinking the potion... still didn't work... and i encountered another player stuck in the same place, he said he tried on 3 different server without being able to go further than this.
Sorry about that!
@Nakano15 - See reply