So, after Uprising went live, my Ranger character used one of the Chipped Seigebreaker's Battle Horns. It worked, BUT right away a red error message appeared in the middle of the screen, scrolling endlessly. the message = " You cannot unequip this item while it is on cooldown. "
In addition - in the chat window, two lines appear and also scroll endlessly, one in yellow followed by one in red. The yellow line =" [System Notify] You used Chipped Seigebreaker's Battle Horn. " Under that the red line =" [Error] You cannot unequip this item while it is in cooldown."
Ok, so I did not attempt to unequip the item, the messages appeared instantly as soon as the horn was used, and continue still, a whole day later, to scroll endlessly in the middle of the screen and in the chat window, rendering gameplay next to impossible and making the chat window useless for anything else.