Permission glitch (Member instead Operator) (Semi-cheat)

I am using member instead operator when pausing, but can anything achievents. I am can downgrade operator to member, but operator to member can disable achievents. Sorry, I am Operator can earned achievents, but option is member and paused is member. (semi-cheat)

Step to reader bug:

1. Create new world
2. Using member level and create it
3. Open the command and write in /gamerule but is cheat.
4. Pausing the game
5. The pausing is operator, but option is member.