Keep Awake Not Actually Working

By enabling the *Stay Awake* toggle under *Developer Options*, which are enabled, my previous phone kept the display on when it was connected via USB. This no longer works on my current phone, which runs Android 11. *Developer Options* are enabled and the *Stay Away* toggle is on (Under it says: *Screen will never sleep while charging*) and my *Screen Saver* is also set to *Off*. Despite these settings being enabled, the screen goes blank after a few minutes even when plugged in. There is another option, *Always On Display* which forces the screen to stay on at all times, even when not plugged-in, but that drains the battery very fast, so it is not practical. Since I use the phone as one would an alarm-clock, I would like it to keep showing its lock-screen which shows the current time whenever it is connected via its USB-C port. Is there a workaround to restoring the expected behavior?