if you use a normal pc sound card. this is normal. when you record you have two options . to record through the left or right channel.because you are stereo lin in . now having said that as your recording a mono track in your track properties BEFORE YOU RECORD you should set the track for MONO
in your software.
i suspect your track is set for stereo, this you should change to mono.
then when you play back what you recorded you will now be able to Pan
the track anywhere you want. so you dont get it only out of one speaker.
it wouild really help to know what multitrack software you are using and sound card. then i can make more informed suggestions.