This is hugely gamebreaking. Essentially, this revolves around manipulating a specific slanted roof going downward to blink through the wall, allowing you to exit the map and shoot through walls. Below you will find a link showcasing the bug, and as I have only found this on Ecopoint: Antarctica and Eichenwalde, I will search for other maps that may contain this glitch. I will update with further posts.
Ecopoint Antarctica Outside The Map Glitch (Patched) - YouTube This video showcases it with Echo duplicating a tracer, and that is how you go above the skybox. You do not need zero cooldowns to execute this, it just makes it easier.
Eichenwalde Outside Map Glitch (Patched) - YouTube And here is the Eichenwalde glitch. Again, I use echo to get outside the map, and thus outside the skybox. You can actually enter the castle this way, which is stupid OP.
Blizzard, if you’re reading this, I can’t even blame you in the slightest for not catching this one. I mean, I didn’t even do it on purpose! Have a great day everyone, and thank you for taking the time to read this.