Assigning function to Ctrl+Space and it worls wrongly

[Mohsen]

Hello all
The problem I have is when I assign ''No-Width Optional Break'' function to 'Ctrl+Space' as a shortcut, it does not function correctly.
Have a look at my document and it's photo attached to see what I mean.
When I press Ctrl+Space in the document, the font changes to 'Calibri' and then it changes to 'Courier New'. (the font is B mitra and I do not want to change it).
It is not what I defined for this shortcut. What is defined for it is the function of ''No-Width Optional Break'' .
What is wrong with it?
Meantime my Windows is 10 and Word is 2013.
Thanx.

http://s000.tinyupload.com/?file_id=80606334386908556049

 

[macropod]

Cross-posted (and discussed in detail before posting here) at:
http://www.msofficeforums.com/word/27716-function-ctrl-space.html
and at:
https://answers.microsoft.com/en-us...it-worls/a10f19db-babb-4157-96c0-bc0d5c742aab
On both of which forums you were asked to observe the cross-posting etiquette:
http://www.excelguru.ca/content.php?184

Evidently you don't care whose time you waste on something you've been told multiple times how to fix but you're not prepared to do anything about.

 

[Becky]

I agree that the OP should accept the advice already given elsewhere, but I'm happy to leave this topic here in case the links are useful to anyone else.