Routing giving longer journeys for unknown reason

🚧 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/routing-giving-longer-journeys-for-unknown-reason/
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The following journey sends me on a diversion to a charger resulting in a longer distance and travel time:

https://abetterrouteplanner.com/?plan_uuid=6dbd2783-3772-4fb9-9b44-2c4710c1cb2e

Adding my own waypoint shortens the journey significantly, without the need for a charge on the route:

https://abetterrouteplanner.com/?plan_uuid=ca3d89a3-0aff-4be4-a02a-4aece008e4eb