Incomplete item reference in Backoffice Orders details

[Ninsa]

Hello, 

Using version 1.7.4.

In Backoffice> Orders > Order summary > Products tab at the bottom

I am working with very long item references. These references number get cut in this division under Product field. I need them to be displayed fully ! 

I need to have this bit extracted and written fully. To match the actual product reference. 

How can I do ? Is there a simple way as my developing skills are limited; 

Thanks a lot  

Edited March 28, 2019 by Ninsa (see edit history)