I'd agree with Sandro if this bug is not resolved then TNT's use case is almost eliminated in this game - (which the dev's do not intend and therefore by the definition of 'software bug' which is 'unintended behavior of software' a feature becoming useless is itself a bug)
Sandro
MC-41954
2013-12-10_16.18.55.png
Why not make TNT drop blocks at 100%? TNT is basically pointless after that change and totally useless.