The Block

When place the Block sometimes Block not show or slower to show.
: Piston and Sticky Piston when make Redstone Loop block will be flashing and disappear for 1 - 6 sec.

: General Block | Place and Break
When place it sometimes it disappear. can break it but texture block not disappear and i can walk into it.

: General Block | Place
I place the block. i can see the block but I can stand on it.