This isn’t an issue from the template.
It’s an issue somewhere in the code.
On you own website, the same thing happens
(see this page: https://maymay.net/blog/projects/inline-google-spreadsheet-viewer/comment-page-2/)
The Games column is hidden also.
When you look at the output, on the last column the code ‘style=”display: none;” is added.
This isn’t added by CSS but by the generating output code.
Please look into this, while this plugin is excellent, except for this small issue.
(Quick fix: if you add a sort on the last column, then the column is displayed correctly, but sorting happens on this column, which might be unwanted)