Using Xchat 2.8.8 under Xubuntu 12.04 (AMD64 version).
I have Xchat configured to show time and date stamps in the text box, and I also have it configured to indent nicks. However, with longer nicknames and longer time/date stamps, xchat is not allowing enough clearance for both to be displayed side by side. The result is that a user's nick, if long enough, overwrites the last few characters of the time/date stamp. If I try to move the indent line, the display is fixed for a while, until some event causes Xchat to move it back to the left.
Xchat should always push the indent line to the right as needed to avoid overlapping text, and should never move it to the left unless the user explicitly moves it.