Long forum threads auto-collapsing after expanding replies is driving me nuts :-)

I use a great extension that allows me to capture a scrolling image of a long forum thread (or any webpage) and then convert it to a multipage pdf, perfect for inserting into Obsidian. But when I manually scroll a thread I would like to capture, and expand all the replies so I can capture the page, when I scroll back to the top of the page to start the capture, it automatically collapses all the replies again!

I’ve seen tons of apps that don’t load all comments for obvious reasons, but never one that collapses them all on the user after they have manually expanded them. Is there any way for you to turn that off?