In ALL Sametime versions prior to Sametime 9.0.x the line arrangement within a chat was name of the chat partner and yourself = first in line - all text written in the chat or screenshots sent/received = indented
With Sametime 9.0.x IBM had the not so glorious idea of indenting the first line but all following lines are not indented which creates a messy layout of the chat window.
The only thing IBM can provide so far in order to "fix" this self created problem is a setting which just slightly moves the lines. Distributing this to all users is a heck of work for just a tiny outcome.
I attach a word document with all information including the IBM PMR TS001267635 which I have opened for this unnecessary issue.
And I highly recommend that IBM provides ASAP a setting that reverts this "improvement" back to the perfect state things were in in all previous Sametime versions.