Please make sure the machine firmware is at least the 3.2.6 version and try again.
If the issue still exists,
1. Gently move the laser head to the center of the bed.
2. Touchscreen > Maintain, the laser head should first move to the top and then move to the rear left.
3. If the laser head doesn’t return to the rear left corner, please use your phone or camera to make a video including the whole process in the work area, and contact FLUX support.