"For Each Entity" Blocks Don't Work With Ender Dragon???

For some reason, the MCreator procedure blocks labeled "For Each Entity As" and "For Each Entity Except" in the "World Procedures" actions tab don't seem to be able to detect the Ender Dragon. They can still detect the Wither so the dragon being a boss can't be what's causing this issue, but maybe it's something to do with the dragon having multiple hitbox parts? If anyone knows why this is happening or how to fix it, please help. Here the portion of my code that is causing the issue: