Customers using the Korean version of windows and IE.
When user view 'Annotated File View', source code the underscore character does not show up.
In Korean Window, the specific font don't display underscore(_), because Korean Windows don't have monospace font.

Thus when viewing code in annotated file view

"test_user" will show up as "test user"

The workaround is as follows:
Below is a part of CSS file(main.css) used by 'Annotated File View'

.annPane span.annLine { font-family: monospace; }

If you replace monospace to Verdana, then this will resolve the problem.

To change this you need to download Fisheye with JSP source or Crucible with JSP source which is only available for users with commercial licenses.

We need to consider changing the font-family from monospace, to something else, that will show up in other international windows OSs.

Other places, that may need to be updated:

.csComment {
    padding: 3px;
    margin-top: 2px;
    font-size: 1.08em;
    font-family: Monaco, "Lucida Console", "Courier New", Courier, monospace;
    display: block;
    background-color: #fcfefe;
}
.quicksearchTextSnippet {
    padding: 3px;
    margin-top: 2px;
    font-size: 0.95em;
    font-family: Monaco, "Lucida Console", "Courier New", Courier, monospace;
    display: block;
    background-color: #fcfefe;
}
.annPane span.annLine {
    font-family: monospace;
}