The newest version of LXTerminal in git replaces the use of the function "vte_terminal_fork_command" (which is deprecated) with "vte_terminal_fork_command_full". This change was however not done correctly and thus the term->pid did not get set probably. This patch fixes the problem and utilizes the "vte_terminal_fork_command_full" probably.
I've submitted the patch to SF.
When/if this patch gets merged I will fix this bug  as well and maybe other bugs :)
This is the first patch I've submitted to LXDE. I hope to keep them coming!