If you silk touch a grave it will give the grave back to you and all the stuff that was in it, place it back down and repeat.

btw Im using Openblocks 1.2.6 version, so I dont know if it has been patched

Confirmed in direwolf20 1.6.4 v1.0.19

I cannot reproduce receiving the grave via silktouch, but I have a fix that should work if this is just a problem on my end. This fix would still allow players to pick up the grave, but when placed it will not have the players inventory.

commit: 66708a6
pull request: #361

Not too keen on fixing it like that. Setting from placing was done in case people want to create maps with prizes.

Please can someone let me know what actual version of openblocks this is happening in? Still not been able to recreate.

Duplication probably fixed (we had some cleanup in 1.2.8). Can't reproduce getting in vanilla with silktouch.