I'm giving Minetest a try and I think I've found a bug. After a few seconds, I can no longer move nor jump. I can still look around using the mouse, and the game has not crashed.
I'm using OS X El Capitan, and I installed the current version of Minetest with Homebrew. I tried to set the debug level to 4 but I cannot see anything strange in the debug file, which I cannot attach to this post (I'm told the .txt extension is not allowed).
Is this a known bug?