Skeletons not burning in daylight

[srnyx]

Expected behavior

Skeletons should burn in daylight

Observed/Actual behavior

Skeletons just chilling like everything is normal smh

Steps/models to reproduce

1. /time set day
2. /summon skeleton

Plugin list

No plugins are installed

Paper version

This server is running Paper version git-Paper-778 (MC: 1.16.5) (Implementing API version 1.16.5-R0.1-SNAPSHOT)
You are running the latest version

Agreements

• I am running the latest version of Paper available from https://papermc.io/downloads.
• I have searched for and ensured there isn't already an open issue regarding this.
• My version of Minecraft is supported by Paper.

Other

This is happening to someone else on their server, too. They tested in single-player and skeletons did burn.

[Machine-Maker]

Huh, confirmed this. This couldn't have been around for too long right? I mean it would've been noticed earlier.

[TwoLeggedCat]

Strangely, they still burn if you use a spawn egg.

[srnyx]

This couldn't have been around for too long right? I mean it would've been noticed earlier.

Well, at least 5 days, as the last 1.16.5 release was 6/16 (but maybe even longer cause the latest release doesn't even touch skeletons) lol

[TwoLeggedCat]

This effects even build 4 (first release), but not skeletons spawned with an egg.

[TwoLeggedCat]

Unsurprisingly, Paper.shouldBurnInDay is set to false on the skeletons that do not burn (those summoned via command).