Battlefleet got escorted by few other TGs, all at 10-40k km around it. Some of them have jumpdrives.
Battlefleet jumped through a jump point. No error appeared. All escorting TGs continued in the same pack. But in some random direction and _in the same system_. For the rest of the interval, five days.
Ehm whaat? I guess escorting through JP may work only with standard jump and all escorts at the same place as the main TG, not few 10k behind it.