I've encountered screen hang during retrieving of crafted items. It happens multiple times on iOS. I have re-installed the app but I still encounter it frequently. Then this morning, I also experienced it using Chrome. Once it happens, the screen stays there at the crafting station and no matter how long you wait, you can't do anything else. Clicking on other buttons doesn't result to anything and I end up having to close the game and relaunch. You can hear the sounds and everything else in the background but you're virtually stuck unless you restart the app.

I'm not sure if anyone else experience this.