Warped Planks have dissapeared from the game

Did this happen after an update? Or without an update?

This occured when I updated the server to the latest snapshot 20w13b.   Villagers also dissapeared.

What was the version before the update? Please provide proper reproduction steps.

Sorry, I was at 20w13a. After replacing the server.jar file for 20w13b I went through a portal to the Nether Ceiling where we had built a base that uses Warped Plank half slabs. All the slabs had been removed from the game. It wasn't a case of them not being rendered. They were actually missing and could be replaced.

Please check if that still applies to the latest snapshot.

It did not happen again in the latest snapshot.

Please check if this is still an issue for you in 1.16 Release Candidate 1 or later.

No longer an issue