It's common for networks to have CHANNELLEN=50 but the /list window truncates the display of the channel name to 20 following the '#'. And, if the channel name is longer than 20, the name display is further shortened to 17, due to replacing the final 3-of-20 characters with 3 periods.

In lieu of the non-implemented earlier solution of making the column widths be changeable, another solution could be to enable the /list window's right-click menu to contain a new choice to have a popup window showing detail about the selected channel. That would also allow viewing an entire TOPIC even though the topic can easily be far longer than the /list window can display on a single line. If such a popup window were non-listbox, it would allow highlighting the topic text into the clipboard.