Unable to render shared route in a incognito tab

🚧 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/unable-to-render-shared-route-in-a-incognito-tab/
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Try to open https://abetterrouteplanner.com/?plan_uuid=2f1dfbe9-1209-4f32-abf2-c3695f2aa94c in an incognito tab where GPS access is denied. It loads the home page with no route