This issue is caused by a problem with the Intel Management Engine firmware. Acer have released a new Management Engine firmware and BIOS combination to solve this problem. The new BIOS is version 1.16.
Download the replacement Acer P258-M Management Engine Firmware and BIOS combination, and follow the upgrade instructions attachedor included with the download.
Note: Please ensure you follow the flashing instructions precisely. Flashing the BIOS component without the Management engine upgrade may not resolve the issue and could lead to other problems.