Grass not growing properly

So, i was playing in the new upcoming beta for Minecraft Bedrock edition to test out general new features and stuff like that, when i noticed big random patches of just dirt everywhere with the grass never spreading, even when i increased the ticks, and i think its because, when sheep eat, then turn a grass block into a dirt block, and there a bug somewhere that wont let the grass grow to the dirt block. i just wanted to let everyone be aware of this bug, and it to hopefully get fixed soon :3