In case you haven't noticed, you can just click the name of the thread or the background box of the thread title to get to the last read post. While you won't be able to open these in new tabs, they still work for going to the first unread post.Shellghost wrote:
"It seems people are unhappy about the removal of the report button, thus I have decided to not add it again and instead remove the "View first unread post" button."
"Why?"
"So you can click the last post button then scroll up, possibly over several pages, looking for the point where you remember last reading the thread."
EDIT: oh hey you can open them in new tabs now if you click the text/thread title