It’s a really old issue which has been on and off for the past three years or so and it seems to be back…
Some guy who was playing my game took pictures to show me that the map was being destroyed and parts were being deleted. I saw someone appear to have building tools last night, as well, when I asked if it was him while I was watching him and he preceded to delete a bridge. 
Yeah it’s a new btools/ingame studio tools exploit.
You could probably just combat this by filtering your Backpack and GUI?
Also, I know this is off-topic, but might I recommend using screenshot software?
[quote] You could probably just combat this by filtering your Backpack and GUI?
Also, I know this is off-topic, but might I recommend using screenshot software? [/quote]
Roblox has intergrated screen capture, press Print Screen button I believe