Extends for one too many spaces. It underlines the space after the word you are trying to underline as well as the word.

There. I said it.

 

What are you talking about? Works fine for me. <---- See, no extra underlining here.

 

ok guys, forget the iraq war and global warming. we gotta a bigger issue to take care off.

j/k man. never noticed it

 

This isn't ramblings.

I am dead serious. Bwahahahahahahaa

OK, in fact what appears to be happening is that when I double click on a word to then underline it, the selection of the word includes the space after the word. If i sweep just the letters of the word and then underline, it works properly.

Problem fixed.