Distances don't match

I just finished Tour de Oz, stage 6, which ended at the top of Alpe du Zwift. In this screenshot, why do I have 7.5km to go in the event, but 8.0km to go on Alpe du Zwift?

Note that the distances converged by the end.

Hi Jim,

It could be a potential graphical bug, and to take a closer look at this I have created a support ticket for you. Please check your inbox for an email and follow all the instructions to reply back with your log files.