Were Arsenal right to be 'fuming' with refereeing after Atletico draw?

What's reported
Mikel Arteta was left "fuming" with the officials after Arsenal's draw at Atletico Madrid - what did they get right and wrong?
Why it matters
This story is appearing in the Sports feed and is being tracked across multiple outlets. We'll update this post as further details emerge from the primary source.
What to watch
- Confirmation or correction from the original outlet.
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- Any official statements or follow-up reporting.
Sources
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