OH, I just remembered/realised:
Especially to CookieRevised and any developer:
Why not use this one, which is used inside the chat window whilst chatting, in the log viewer as well? It functions in EXACTLY the same way as the one Windows decided to replace:
I don't mind doing anything so long as I have the same functionality present.
Of course I do use the one provided by Plus! in the log viewer, but that, I believe, has its own place where it performs best when searching ALL logs. Of course, no substitute for that. But for within a specific chat, this lightweight one is best IMO.