so you have a minecaft cannonn with mincart inporvements on max speed set to 1000 and when launched just disapeard (doestent allways happen)
Environment
see image
Attachments
Comments 2
Please upload a video recording of the issue with the debug screen (F3) enabled. You can record your screen using third-party software such as OBS or, on macOS, the built-in Screenshot app (shift+cmd+5). You may need to trim and/or reduce the quality of your recording so that it fits under Mojira’s 10MB file upload limit.
Did you see if it landed anywhere?