Currently an opened tab in LXTerminal is closed when one issues a middle-button click within the tag title. I'm not sure to understand the rationale of this action, I was many times trapped by this feature while trying to paste a text within an opened tab (action of the middle-button, as is done in most linux environments) and having unfortunately placed my pointer a bit too high in the terminal window: the immediate result is an immediate and unwanted disparition of the tab. This trap being hard-coded (in function terminal_tab_button_press_event), it was possible to recompile the package with this middle-click action commented out, which for me is much more secure. But maybe this action would better be parametrized from the configuration ?