Description:
No suggestion to open .xlsm with LibreOffice Calc via context menu

Steps to Reproduce:
1. Create .xlsm file
2. Right click to file from step 1, see context menu

Actual Results:
No suggestion to open .xlsm with LibreOffice Calc
(but it's possible to open it using 'Open with -> Select LibreOffice Calc'

Expected Results:
LibreOffice in the context menu


Reproducible: Always


User Profile Reset: No



Additional Info:
Reproduced for

Version: 6.3.0.0.alpha0+
Build ID: 86501f577638b44042c35e601d13651992b64fd5
CPU threads: 4; OS: Linux 4.14; UI render: default; VCL: kde5; 
TinderBox: Linux-rpm_deb-x86_64@86-TDF, Branch:master, Time: 2019-01-16_17:35:02
Locale: ru-RU (ru_RU.UTF-8); UI-Language: en-US
Calc: threaded

Also reproduced for earlier versions, 6.1.2.1, 6.0.7.3.