Field number of characters is different in the view tab

Field number of characters is different in the view tab

Hi,

I made some modifications to an application where the number of characters for one of its field changed. The field max number of characters was 12, now it's 22. The field is a concatenation of 4 other fields (4 chars, 6 chars, 6 chars, and 6 chars), and is updated automatically when adding a new item in the form. This is working fine, and I can see the 22 characters when the field is updated in the form itself. However, when it's submitted, the view only shows the older number of characters (12 instead of 22). 
I've double checked all the linked fields sizes, tried creating a brand new view, but it's still the same. Any idea why this could be happening? 

Thanks,
Nana