I have noticed that it is possible to access the “Edit” section of Charts (Reporting feature) with “read-only” rights (if you expand the view before).
… however, you can’t save it, as the system crashes :
However, you can temporarily access all the data (without saving).
Can you reproduce?
Is it a bug? 
I reproduced it on my demo account. Same thing happens. It looks like I can edit die view only chart and then the system crashes
Hi everyone, thank you so much for flagging this. I’ve also been able to replicate this behavior so I’m escalating it right away!
Hi everyone! Our Developers have confirmed that the issue has been fixed. I can no longer reproduce this behavior on my end. Hope this helps! 