Some vertical slabs (every 5-10 slabs) are placed with no texture and if you break them the game crashes. For a split second it looks like the slab is placed horizontally but then is changed to vertical position.

Forge 1.19.2.
DoubleSlabs-1.19-6.1.0

More details. As you can see it's placed and the second vertical slab while it should be the first one