It might be offset but offset is like a carburetor on an engine. It's the first thing attacked and, more often than not, the last thing that's causing problems.
If your machine has done this from day one out of the box, then offset may well be the culprit. If the offset is set at what it's supposed to be for your current blade then probably not.
If it was cutting before and started exhibiting this behavior, probably you need a sharp new blade. And/or you need to blow the dust and debris out of the carriage mechanism with special attention to the blade up and down mechanism. Then inspect your cutting strip. Any or all of these things are far more likely to be the cause than the offset. Offset isn't subject to wear and tear, it neither breaks nor wears out. It's doubtful that the offset parameter mysteriously changed.
Certainly you can compensate for what's actually wrong by diddling the offset but most likely you're not fixing anything. There's a good chance you'll merely be a player in the "Doc it hurts when I do this." "Don't do that." comedy.