The most common and most likely answer to this crossword clue is the 6 letter word FLURRY
I've seen this crossword clue in Financial Times
F
L
U
R
R
Y
Buddy explains!

The straight part
We know that "Commotion" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case commotion = flurry.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FLURRY mean?
FLURRY noun- A light, brief snowfall.
- A sudden and brief blast or gust; a light, temporary breeze.
- A shower of dust, leaves etc. brought on by a sudden gust of wind.
- Any sudden activity; a stir.
- A snack consisting of soft ice cream mixed with small pieces of fruit, cookie crumbs, etc.
- The violent spasms of a dying whale.
- An occurrence of something (countable instances) in large numbers, happening suddenly or in a short period of time.
- To agitate, bewilder, fluster.
- To move or fall in a flurry.