Route with roof box reports using less energy

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/route-with-roof-box-reports-using-less-energy/
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ABRP iOS v5.0.10

61 mile journey planned in Peugeot e-208 2020.

ABRP selects exactly the same route for both plans.

Plan 1: without roof cargo
Departure SoC 100%
Arrival SoC 60%

Plan 2: with roof cargo
Departure SoC 100%
Arrival SoC 63%

Route from Holbeach, Lincs, UK to Felbrigg, Norfolk, UK