掲示板 Forums - Kao evolution bug

So whenever the option for " Kao-evolution " comes and once it evolutes then the window doesn't close but instead this appears ( the loading image ). I have to reload it to make it disappear.
This also sometimes happens when I click on a kao coin to see it, but once I press the close button it appears.
This also happens when I reach another level, and just like the above two it doesn't close but shows the loading image.