I think I may have found another bug, the mission planner does not appear to save committed missions if they have an escort assigned. Refreshing the page reverts the mission.
I reckon it was something with MP-Head.js if I recall correctly.
OK, I managed to reproduce your bug. I tracked it down to an uninitialized variable in MP-Head.js, and I have corrected it. While doing that I found another bug in issuing new units from the reinforcement pool. This bug was pertaining to special character translations, HTML entities, character sets etc. I have fixed this too. Now we can use Unicode format (e.g. \uxxxx) or HTML entities (e.g. ö) or direct special characters when specifying names in Army_Units, Airforce_Units, Navy_Units and Railway_Units records.