The characters appear to have two character styles applied OrgCode and Underline. From content.xml:
Are any of the <text:span text:style-name="Underline"> <text:span text:style-name="OrgCode">Resolve</text:span> </text:span> stored procedures used in other code? Or does any other code use <text:span text:style-name="Underline">Resolve.APIDs</text:span> </text:p>
Does docx support two character styles? If I open the .odt in Word 365 there is no underlining.
In this case the character style OrgCode
is defined without underline but if you want to have it sometimes underlined and sometimes not then best to have two character styles, e.g. OrgCode (as is without underline) and OrgCodeXX (replace XX with intended function, e.g. Title, and add underlining). In that case the character style Underline can be left to use for Text Body.
Or, if OrgCode is always underlined, then Modify the style of OrgCode to include single underline.