It's not something th a t I've seen before, nor is it something that's come up on the forum. In general, I don't think it's a Visio version problem.
Could explain exactly what steps and the sequence, to provide better understanding.
Is this a new file?
Does it happen all the time?
Is it just vertical lines, or lines at any angle?
It might be any of the following:
1) corrupted Visio, needs reinstallation
2) some add-in
3) out-of-date video driver