My room is open on the left rear corner.
It (according to my observations) creates a dip around 48Hz at the listening position via phase difference of 180 degrees of the standing wave around that frequency with a mono bass signal.
Otherwise, no particular problems are noted.
I could add that without measurement I might not have audibly noticed that aberration.
When the bass is stereo, and not mono, the problem can disappear since the phase alignment is different at the listening position.