No, no endstops.
All three axis?
That is what happens when it thinks an endstop is triggered, you can only move in the positive direction, away from the endstop.
Since you aren’t using any, either your board have a short across all 3 endstop pins (kinda unlikely since there are spaced everother pin so it would be 6 shorted pins), or something is wrong with your fimware.
Try flashing the new beta firmware just in case.