Center channel audio bleeding into left channel

When working on the audio mix for a project I discovered that dialogue would bleed into the left channel for some reason although the panner is set to center exclusive for that track. Can anyone else replicate this problem or can an expert chime in to confirm if this is a bug? It's definately bugging me
EDIT I am on 2014.2

with Premiere Pro CC 2014.2, build 8.2.0, I do not have any success with the center channel isolated with the stereo or mono audio
how about a work around with using an adaptive track, then channel output map the stereo input 1 and 2 both to output 3 (center channel)

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