Holding all directions while new cutting will cause the drift to bug sometimes. You’re supposed to let go of first directional arrow key now. 在新切割時按住所有方向有時會導致漂移錯誤。 你現在應該放開第一個方向箭頭鍵。
probably N-key or Ghost-key happening on your keyboard, just trying to change your direction control to English keyboard or Number keyboard, that could be help
your video is very educational,i wish you could add english subtitles if possible (and i you dont mind can you make a similar video but for mobile version ?)