If there is one, try and remove the compressor on both the master and on the channel that has the problem. Listen again, see if it still happens.
Your feeling of "accent" could be due to the compressor being released and pumping back.
You could also have recorded some automation on volume for example, because you changed the volume while record was still active, check if any of the knobs have automation on them, that could be another cause.
Otherwise, I don't see...