When one has environment setting LC_ALL=fi_FI and tires to use elm in xterm window then the line wrapping is wrong. Ie. elm always tries to display lines as one character too long than the line length is. This results in messy screen and it is quite impossible to use elm in xterm then. Resizing the xterm window or playing with stty settings does not help. elm works ok in ascii console windows. The same bug exists in kterm too. If I remove the LC_ALL setting then elm work ok.
This issue has been forwarded to a developer for further action.
With elm-2.5.1, using a message with exactly 80 chars in each line, I tried LC_ALL=fi_FI elm in a 80x25 xterm. I could not display the message until I resized the xterm to 80x73. However, the problem seemed independent of specifying LC_ALL=fi_FI, and resizing the window seems acceptable as a workaround to whatever problem elm has.