I marked it as solved because it answered my question as to why the issue was happening, even though the solution is still being worked on. 

I guess in a sense it is not fully solved until the problem is fixed... but at least now I know it isn't just on my end and there is an actual reason (other than user error). 

I hope this can get fixed soon because it is really adding a lot of labor time when sending invoices since we have to work around it.