[dongsoo]

Sort of found the reason. But no solution to why.

I was using Dreamweaver to modify the template. then update the HTML files.
Just by changing the title and site logo, somehow above mentioned pages broke.
I checked the resulting HTML files with original downloaded files with diff. Other then what I have changed in the template, no differences found.

If I use the regular HTML template, it works, though.
Anyway, I ended up converting all HTML to PHP so I can use includes. I hate changing many files for just one nav word change and such. Hence it would have been easier to use Dreamweaver template feature. By the way, I use the 2019 Dreamweaver.