Kato TM funny codes. 


I am wondering if anyone has experienced the same. Sometimes, I see that the funny code appears automatically in some segments I translated or edited. It seems a regular feature in connection to the line return symbol. But it appears also randomly. I always have to read a few times to get rid of them before I submit my work. And maybe they still appear afterwards. Any idea what could be the cause and how I can prevent it?
Many thanks