Description:
If I insert a small greek letter via the special symbols menu, under some conditions it is replaced by the capital version of the letter.

Steps to Reproduce:
I'm translating from the German GUI
1. Insert -> Special Character -> search for phi
2.select small phi (:phi:)
3.Insert
4.type (in input line) space (phi gets replaced in the inputline, but not in the cell
5.type less than symbol (<)
6.press Enter

Actual Results:
small phi got replaced by capital phi

Expected Results:
small phi should not get replaced


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.0.6.2
Build-ID: Gentoo official package
CPU-Threads: 4; BS: Linux 4.14; UI-Render: Standard; VCL: gtk3; 
Gebietsschema: de-DE (de_DE.utf8); Calc: group

When typing a letter, e.g. a instead of <, phi stays small, or gets repaired (after typing space into the input line after phi, capital phi is displayed, but does not get saved to the cell.