In icons.png, the same position is used for absorption hearts while poisoned and the flashing afterimage of Ice hearts when being damaged.
Steps to reproduce
Download and add the resource pack below to your game
Make sure your game mode is survival or adventure, and cheats are enabled
Use /effect give @s minecraft:absorption
Use /effect give @s minecraft:poison
Observe the appearance of the absorption hearts
Use /effect clear @s
Now stand in powdered snow long enough to take damage
Observe that the appearance of the flashing hearts appear the same as the poisoned absorption hearts from before
Example images are below
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We're tracking this issue in MC-205043, so this ticket is being resolved and linked as a duplicate.
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