If I go to this page:
https://kagifeedback.org/d/5305-kagi-translate-feedback
(Thread: Kagi Translate Feedback)
Or if I go to the link from the homepage of kagifeedback (https://kagifeedback.org/d/5305-kagi-translate-feedback/610) and then click on "Original Post" on the right hand side column, I begin at the top of the thread.
When I scroll quickly, I see placeholder stub/template images which are subsequently loaded and replaced by appropriate text and images of the messages they represent.
So, it appears that they are loaded "on the fly" rather than in the beginning.
I checked by searching for "Japan", case-insensitive and NOT whole-word-search. Initially the browser (Firefox) only showed 1 result but after scrolling a bit, it said there were 7 results. So, it appears that the browser search does not fulfil this purpose at the moment - unless this is something specific to my browser's setup.
Did I completely misunderstand what you had meant or is it that the behaviour I see at my end is not matching what you say it ought to be?