When i break a block in survival singleplayer i have to break it twice or more times in order for it to break

Put the summary of the bug you're having here

What I expected to happen was...:that the block would break 

What actually happened was...:i had to break the block 2 times or more

Steps to Reproduce:
1. I just mine any block and i have to mine it twice or more
2. ...
3. ...