Using Calibri Font in QuarkXPress document when we enter tti, ffi, fi, ti in any word it appears like it is displayed below:
OpenType Standard Ligatures are default turned in the character stylesheet in QuarkXPress.
In case you don’t want the ligature glyph, you can remove the OpenType Standard Ligatures styling applied on the text
Two ways to enable or disable ligatures:
The text will look like as below after enabling Open Type Standard Ligatures: