Yes the left switch cancels the right signal and visa-versa. Are there any mods or aftermarket items added to the bike? Such as handlebars lites etc? I assume there is no 4 way flasher switch. Is there a rear stoplight signal run light harness that operates the rear signal lights as red brake lites? This can be a pinched wire, bad ignition switch, flasher etc.

 

As far as lighting and bars the bike has a stock set-up.
No 4 way flasher.
No lighting harnes for signal, stoplight, run for the rear lights.
Haven't made any mods to the bike to cause this madness, just woke up one day with it.