I would recommend opening a track with Tech Support, since the same code in the HTML destination does show the page dimension information. Either the TAGSETS.TABLEEDITOR developer intended this behavior, or it is an issue that needs to be fixed. Tech Support is in a position to figure out which is the case.
Otherwise, one workaround would be to use the #BYVAL/#BYVAR information in a TITLE statement with BY group processing to avoid using the page dimension in your TABULATE code. Something like what's shown below this post.
proc sort data=sashelp.class out=class;
by sex name;
Look in the SAS log for this line:
NOTE: Writing TAGSETS.TABLEEDITOR Body file: c:\temp\xxxxx.html
I observe the same behavior (no page identifier) when I use the above version of TAGSETS.TABLEEDITOR and SAS 9.2. If Peter C. does not observe the same behavior in the earlier version of the tagset template, then this would be a reason to open a track with Tech Support. Clearly, something changed between the previous version of the template and this newest version of the template.