And you mean (specifically) the "green" thread titles themselves? Are ALL the text that appears on the listing pages?
I swear (and I've just double-checked to confirm), NONE of this was touched - not even for the "dark mode" changes. I only changed font colors within the threads themselves, not on those listing pages... ...weird!!
The whole text from left to right is smaller: Thread titles, authors, numbers.
I've also noticed that within a thread the text for the Agree functionality seems to have shrunk by the same amount as the text on the topics page. It's odd that within a thread only the Agree functionality is assigned with a smaller than before font size while everything else looks still the same as before. Maybe there's a connection somewhere.