That is strange - I'll keep an eye out for the dialogue text thing to occur again.
Thanks again for sending the script! I've released an update that will at least take care of the box sizes when reloading the script. I went ahead and made a change so that all nodes have the same width (which also takes care of a suggestion I believe you had and should make it easier to line them all up on the grid now).
I've made a note of the third bug and will take a look at that. Thanks!