I have a XB273 NV (XB273UNV, NVbmiiprzx, I've seen it named a combination of the 3 on different parts of the Acer sites) that has a default blue LED strip on the back. I have this disabled via the OSD > System > Lighting > Lighting Switch = Disable. The lights are coming back on repeatedly during regular use, coming back to the default blue state. When this happens the menu for Lighting Switch shows as disabled as last set, though the light is on. Navigating back to the setting and re-selecting disabled successfully re-disables it.
Why is this setting being overridden? How can I disable the LED strip on the back of the monitor reliably?