Experience as per comments & screenshot in posts above.
(Seems this fault commenced occuring some two to five
days back).
Whatever the fault is, it's fixable, as evidenced by following
test:
-Saved 'New Posts' webpage as html, (Webpage, complete),
two parts, (file 'New posts _ Websleuths.htm' and file
'New posts _ Websleuths_files' ), saving to my hard drive.
-Opened file 'New posts _ Websleuths.htm' in
text editor
(e.g. Wordpad), and 'Select All' text, then 'Copy' text (i.e.
to clipboard).
-Went to Website Html Corrector;
HTML corrector (HTML fixing tool)
and then pasted that copied html text into input box.
-Pressed 'Wash' button on that website webpage.
-Pressed 'copy' button on that webpage (to copy
corrected html text as displayed in output box).
-Went back to
text editor (e.g. Wordpad) and pasted
the corrected html into the still open file 'New posts _
Websleuths.htm' over the previous html it had in it.
-Saved (and closed) file 'New posts _ Websleuths.htm'
in text editor (and thereby, in my hard drive).
Result; now, when I double click file (in my hard drive)
'New posts _ Websleuths.htm' , the (saved, offline)
webpage 'New Posts' displays correctly.
Note, some actions described above may have
different names in different Operating Systems.
I'm off to bed, so as yet I haven't figured out what
it is that the Html Corrector website fixes in the
'New Posts' html.