Maybe I was misunderstanding something, but I didn't seem to be able to move into the center of the arena to pick up the orb. My character would no longer move towards the center within a certain radius of it.
I don't know if it is a misunderstanding or bug because i haven't be able to replicate it. Regardless i am very sorry that you couldn't enjoy the game :/
Here's a GIF (it's sped-up and poor quality, sorry!) so you can see what it looks like on my end. It's like there's an invisible circle I can't move past. I think it's most observable towards the end of the video where you can see the character slowly rubbing against it.
Now I know what is happening, I will update the game as soon as posible. I really apreciate that you taked the time to make the gif to troubleshoot the incident :D