In the EDZ Sunken Isles, when completing the Weapons Exchange public event, you are unable to approach the Scorch Cannons. You get pushed away before you can get too close. This happens to both players and enemies. This behavior is preventing you from depositing the Arc Charges into the Scorch Cannon depositories, which prevents anyone from making this public event heroic. I have posed a video showing the behavior (the video is rather crude as my PC is fairly outdated at this point), but he behavior is displayed nonetheless. Let me know if you need any more information.