SMBX Experiments: Strange Locked Warp Bug reproducing

It's a very old and well-known bug: https://www.smbxgame.com/forums/viewt... It still works even on TheXTech with one condition: key should be placed first, and then, any NPC that appearing in hands after the key. This video showing how the bug is reproducing. How to reproduce this bug: The locked warp must allow NPCs. The key must be on a layer that gets hidden as soon as you use it; in other words, the key's "death" must trigger an event that hides the key. There must be at least one other NPC on-screen at the time that you unlock the warp. Key NPC must be placed first, and then place any other NPC. If you'll place key after, this bug will not work. A level from this video: https://archive.wohlsoft.ru/Levels/SM... TheXTech engine, used in this video: https://wohlsoft.ru/projects/TheXTech/ Note: In a moment of this video, currently released TheXTech doesn't support testing integration, however, it's ready and will appear very soon. Moondust Project, used for its Editor to work with a level: https://wohlsoft.ru/projects/Moondust/ (you need to use builds from the Laboratory!!!)