Water becomes see-through after killing Ender Dragon near water in Overworld

Short description of the issue
Water texture becomes see-through (x-ray) after killing an Ender Dragon near water in the Overworld.

Steps to reproduce the issue

1. Summon an Ender Dragon in the Overworld using a command or spawn egg.

2. Go near a body of water (any size, natural or placed).

3. Kill the Ender Dragon while staying close to the water.

4. Observe the water’s blue texture from the player’s perspective.

Expected result
The water texture remains normal (solid blue / animated texture) after the dragon is killed.

Actual result
The blue water texture disappears or becomes transparent (see-through / x-ray effect) where the dragon’s light previously affected the view.