The bug

According to the Bedrock beta 1.17.20.20 changelog, enchanting tables were changed to emit a light level of 7 instead of 12, which is what they used to. I am unsure whether this is a valid parity issue, because even though this particular issue happened after 1.15, enchanting tables have always emitted light on Bedrock Edition, but not on Java. However, I think it is a valid issue because this constitutes a new parity break.

To reproduce

1. Set the time to nighttime.
2. Place down an enchanting table.
3. Notice how the enchanting table does not emit a light level of 7 (it actually does not emit light at all).