[MC-181748] Spawn eggs can’t be used against flowing liquids

You are unable to spawn a mob using a spawn egg against a flowing liquid, but against sources you can.

Place water and make sure that it flows
Aim against a flowing water block and make sure that you don’t aim a block through the water
Right click

What actually happened: No mob got spawned. But if you aim against a source block it works.

What I expected to happen: You can also spawn the mob by aiming at flowing liquids not just source blocks.

Linked issues

Can confirm.

Can confirm in 1.17.

Can confirm in 1.17.1.

I am able to confirm this in 21w40a. The expected behavior would be that you are able to use spawn eggs against flowing water.

Can confirm 23w43b. I would like to request ownership of this issue to maintain it.