Comment 18 for bug 1243354

This bug indeed sucks, but I have found that running xfce4-terminal with the option --disable-server (as noted by Erik above for testing purposes) has mitigated the impact for me. Since I launch xfce4-terminal with a keyboard shortcut, this was easy enough to do.

I think that very few people (proportionally) use separate screens these days; most folks with multiple monitors just stretch one screen across them. This fact leads to bug like this getting neglected. FWIW, Firefox and Chrome both have the same problem. Although if you try to open another window on the other screen, at least it doesn't crash your initial window, it just opens a tab in it usually.