Concrete bug

[Qubs]

Hello,
There's something weird with concrete. When I buy it, it stacks normally but as soon as I place and break it a new stack is created that won't merge with any of the unplaced ones. Idk if it's an mc feature but I don't think so XD. I tried lime and red concrete.

 

[Qubs]

It's not that big of a problem alone, but I wanted to use a builder wand with it and I can't since they are 2 different blocks.

 

[bca_]

It is much like the issue with spawners and I also have encountered this bug in the past. I'm not certain if it is reported or not though.