Really annoying error - Unable to get permission key for view_edit_interface

Is this ever going to get fixed?
Seems to be called by advanced permissions being on.
The loss of editing work (ie moved block disappearing) is really detrimental to the users experience

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studio108 replied on at Permalink Reply
This problem despite being nearly 3 years old has just occurred in Concrete5.7.

I have just had to rebuild a page for a client.
MrKDilkington replied on at Permalink Reply
Hi studio108,

Have you checked the bug tracker to see if others are experiencing this issue in 5.7? If no one has reported this issue, I recommend reporting it and including the steps required to repeat the error.

concrete5 bug tracker
studio108 replied on at Permalink Reply
Will try to replicate it on a test server first. The problem I fear, is it is an intermittent fault which is the worse sort.