[SOLVED] Unable to add site column with jslink on SharePoint online with CSOM

Unable to add site column with jslink on SharePoint online with CSOM

I'm facing a weird issue today, we have a SharePoint provider hosted add-in which used to work properly for the last year and a half.
In that SPPH Add-In we use jslink on fields. When we try to add a new site column with a jslink property specified we get an unknown error back.
If we try to create the field and then update it with the jslink value, same issue.
I tried updating the CSOM to the latest version too.
Anybody facing the same issue? Any idea on the subject?
Thanks for your help!

web.Fields.AddFieldAsXml("<Field Type=\"Note\" Name=\"myfield\" StaticName=\"myfieldSN\" DisplayName=\"My FIeld\" " +
                                                       "Required=\"FALSE\" Hidden=\"FALSE\" ReadOnly=\"FALSE\" UnlimitedLengthInDocumentLibrary=\"TRUE\" " +
                                                       "ShowInDisplayForm=\"TRUE\" ShowInEditForm=\"FALSE\" ShowInListSettings=\"TRUE\" ShowInNewForm=\"FALSE\" " +
                                                       "ShowInVersionHistory=\"TRUE\" ShowInViewForms=\"TRUE\" ShowInFileDlg=\"FALSE\" " +
                                                       "Group=\"Attribute\" JSLink=\"sp.js|~sitecollection/SiteAssets/AttributeOnline/Scripts/jquery-2.1.4.min.js|~sitecollection/SiteAssets/AttributeOnline/Scripts/jslink.js 
\" />", false, AddFieldOptions.DefaultValue);
            _context.Load(field);
            _context.ExecuteQuery();

Solution

As stated in the documentation here jslink is not yet supported in the new experience. In order to support your customization you'd have to disable it.