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Look at the graph and there are two purple/pink W tabs. You can hide all the other variables and see there's a difference between them. Would seem you are getting receiving both combined Power and the Right Power in your ride file. I don't know why that would distort the balance but maybe shows that something isn't setup right.
From memory, unlike P1's the left pedal is the master and takes data from the right pedal and transmits that to the head unit. The unit then can work out balance and other dynamics from there but only one pedal shows up on my Bolt, for example. What head unit are you using?
You seem to have both Power and Right Power on your graphs. Do you have two power meters?