Versions

Betweenlands Version:

3.3.6

Forge version:

Version 14.23.2.2651

Singleplayer or Multiplayer:

Both Singleplayer and Multiplayer

Installed mods:

This issue was found while playing the following Modpack "Sevtech" in version 3.0.6
https://minecraft.curseforge.com/projects/sevtech-ages

Description of the problem

So it turns out that Pitstone Slab cannot be broken. Survival or creative, it dosesn't matter.

How to reproduce:

1. Go into either multiplayer or singleplayer.
2. Place Pitstone slab anywhere.
3. Try breaking it in either creative or non-creative mode.

Expected result:

When you break the slab you should get it should drop and won't reappear again after.

Actual result:

As you try to break it the slab will disappear for a split second then reappear in either upside down or normal placement.
If you destroy in singleplayer the slab will drop a slab for you but won't actually get removed.

This seems to be something specific to SevTech and usually doesn't happen. It's probably some other mod changing the way slabs are broken, and I don't think our slabs do anything weird or special.

Issue on SevTech repo: DarkPacks/SevTech-Ages#1519

My first guess would be KleeSlabs, as that allows the player to only break the top/bottom of a two-slab block when sneaking. Could there be some unintended interaction there?

I created this as an issue on the KleeSlabs tracker. This happens in a pack with just The Betweenlands and KleeSlabs installed.

TwelveIterationMods/KleeSlabs#17

Fixed in latest KleeSlabs version.

Thanks!