My English is not the best..
I noticed a weird bug . To recreate this bug first make a random block with a random texture (not a color). 
Then copy and paste the block. If you now scale one of the blocks the other block now mirror its texture size prior to the one you scale.
I hope that makes somewhat sense.
Added a picture for example: Left block has now shrunken texture and the right (that was scaled) has its original.

Thanks for reporting this! It's a known issue and we're working on an alternative for the UV mapping which will be changed in a future preview version.