Any number of things can cause the non-display of the column contents. Without having access to your core code files, it is really difficult to ascertain the cause.
The remedy is probably time-consuming, and only you can do this.
Suggest you do this:-
Get a copy of WINMERGE - the file comparison tool.
Use WINMERGE to compare the files of your new template, with the files of a standard template.
Winmerge will alert you to files that have the same name, but differ in content.
You will have to look at these comparisons, and where there are omissions of code or blocks of code, determine whether you need to include such code in your new template, and then edit accordingly.
Winmerge also alerts you to files that exist in one directory, but not in its corresponding comparative directory (there may be files that you have neglected to upload).
Other people may have further solutions, but you may be better off reverting to your original template while you find the answers.