Currently there is no anmation when breaking a block.
This is missing since version 0.0.46.

You can see it in this screenshot:

Jade shows almost 80% breaking, but the block texture did not change.
This applies to every block in the game.

kind Regards

fixed with 0.0.51 (downgerade of gregtech)

fixed in GT 1.0.11

Having this issue too