Your username: NotTay. In which minigame/server does the bug occur: Parkour, specifically the "Cube" map. Detailed description of the bug: It is possible to swim up the water at the bridge in the very beginning of the map. While if you try to go all the way into the water it will send you back to the beginning, it's possible to go slightly in the water and swim up, allowing you to cross the bridge without actually jumping across it. Screenshots: http://prnt.sc/ac44d3
This is a bug in every map with waterfalls, pretty sure it's because you're mostly in the air block so minecraft doesn't recognize that you're in water for the restart to trigger in the plugin. It's not like it speeds up the map - quite the contrary, it slows you down a ton in this map for sure.