Continued without changing what someone in theatre did that’s not working (6)
I believe the answer is:
rested
'continued' is the definition.
('rest' can be a synonym of 'continue')
'without changing what someone in theatre did that's not working' is the wordplay.
I cannot really understand how this works, but
'someone' could be 'ted' (Ted is an example) and 'ted' is found in the answer.
The remaining letters 'res' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for rested that I've seen before include "Took break in desert" , "Took a break from activities" , "Took one's ease" , "Reposed or took a breather" , "Relaxed, took a break" .)