This happened twice to me:
After starting my longhaul flight my plane load was at 82%. I quit my flight utilizing AP+
After continuing my flight the new load is now showing up to 142% and excels maximum load. It pushes the N1 to 96%.
Im not sure if this has something to do with beta, but it never happened to me before.
not 140% tho. promise. I would have to close the beta and go to the regular app and it will go from ~140% to ~101% when it was less than 80% at departure
then I would have to dump fuel for a long time. no clue how this affects payload, since my latest flights on beta where i experienced this issue had full payload.