Post Titles Vertical

After installing SlimStat, post titles in the Posts section of backend appear vertically, as in one letter per line going down. Titles of pages still appear normally in the Pages section. I know it’s SlimStat because it happened immediately after installing, and I was actually on the lookout because the same thing happened long ago with another analytics plugin. But I wasn’t using analytics at the time, so I just deleted it. I’d like to use SlimStat but the vertical post titles makes things very hard to find!

The page I need help with: [log in to see the link]