I just picked up my P bass (copy) again, after not having played that bass for about ten days or so, and while it is still in tune, there is a weird behavior on the G string that I never noticed before. The sustain is very noticeably different on different notes (= at different frets). The E on the 9th fret is particularly “full” with a long sustain (I have all sympathetic strings muted), while the C on the 5th fret is dying off almost instantly, as if muffled by a piece of cloth… All other notes/frets are pretty much as you’d expect. And it is only on the G string.
Note: the strings are about a year old, but still in pretty good shape, with a nice ring and long sustain on open strings.
Has anyone experienced similar issues and knows what could be the problem??