when day night cycle is false, daylight sensor updates in a strange way. 

How to reproduce:

1. run /gamerule dodaylightcycle false
2. run /time set 22000
3. place a daylight sensor and some redstone wire connecting with it. The signal is 0.
4. execute command /time set 1001, then the daylight sensor never updates, unless you click it to invert it.
5. execute command /time set 20, then the daylight sensor updates every gametick.

As long as the time is a multiple of 20, then daylight sensor updates every gametick. Otherwise, it never updates.

In Java Edition, daylight detector updates every 20 gametick, But in the Bedrock Edition, it depends on daytime, instead of gametime, which doesn't make any sense.