Strange cahracters on report from field overrun

We have a report, created with Cystal Reports 10, that is now giving us an issue. It is displayed via web browser.

When displayed using Crystal Enterprise 10, it looks fine. But when displayed with CR XI r2 JRC, we get strange characters after the field when the field on the report is overrun. The field on the report is not formatted wide enough for all data but this has not been an issue in the past, the overrun just displayed fine.

The display we are getting looks like:

For short data we get:

*TEST

For longer data (overrun) we get:

*TEST1瀲瀀猀

That should have displayed *TEST12.

I think I can get around this by formatting the field wider (I have not tried it yet) but we wanted to know if this was a known issue with a root cause / fix.