add --working-directory argument
mlterm crashes sometimes when hitting backspace
Should SO bump libkik
conflict between Alt and AltGr
rectangle selection is always ON
I haven't reproduced it yet, but openbox seems to ignore MWM_HINTS_DECORATIONS property which mlterm sets on your system. For now I don't know why. If you use "urxvt -bl" and the same problem happens, it might be caused by your configuration of openbox. I'm not familiar with openbox, but I think adding following lines to your ~/.config/openbox/rc.xml or ~/.config/openbox/lxde-rc.xml is another way to solve it. How about it? <applications> ... <application name="mlterm"> <decor>no</decor> </application>...
I tested mlterm-3.5.0 on gnome-shell(3.24.2-1) and openbox(3.6.1-3)/LXDE on ArchLinux, but I haven't reproduced this problem yet. Which window manager do you use ?