I was receiving my artifact shipment and the loading bar was hanging, lag I think. I refreshed, and did it again, same thing. I refreshed the page once more and this is what I got:



I tried refreshing to see if it'll goes away, but it didn't. I didn't send a message to the dev because I want to see what happens when I receive another shipment. Next shipment later:



I think it was lag that caused this and/or I pulled artifacts while I already had no AP left, and has anyone else experienced this before?

Ive had something similar happen with research.. right when it was refreshing itself, i used my research, AND was being hacked repeatedly, and ended up with a negative amount. it went away with another refresh though.