Put the summary of the bug you're having here
The game randomly takes screenshots without me hitting the button
What I expected to happen was...:
Describe what you thought should happen here
Not taking a screenshot
What actually happened was...:
Describe what happened here
Takes a screenshot
Steps to Reproduce:
0. Put a step by step guide on how to trigger the bug here
1. ... Play minecraft on Windows 10
2. ... Just wait and it will take random screenshots.
Linked issues
Comments

Fixed for 1.9
FVbice my screenshot key is LMETA or the windows key on the keyboard. I have made sure 100% that I am not touching it.
So Kumasasa this is fixed? (for when 1.9 comes out)?

Yes, see MC-68399
🙂
FVbico its not on Windows 10 minecraft edition. Its on regular MC while running windows 10
Can you check your settings, to see if you didn't exedentally replace the take screenshot button with another key?
I'm not sure if you meant the cross platform version of the game, or the windows 10 edition.
Reminder for windows 10 edition bugs go to the pe bug tracker.