When reading the honey level of a beehive through a block with a comparator, the comparator does not behave normally and needs to be updated in order to output a correct signal.

How to reproduce :

The attached screenshot was taken by placing the filled beehives with the following command (with adequate coordinates) : /setblock 0 0 0 minecraft:beehive[honey_level=5]
Hence the two comparators should output a redstone signal of strength 5.

Then, one comparator was updated by placing and destroying a block next to it while the other was not.