Variation on a Theme:
The bug with opening new tabs that show the page as having been loaded, but display no content, has a new manner of manifesting itself for me on Win10 64, Viv 32: I will follow a BOOKMARK to a new page, it will show the page completely loaded, with the new address, but the visible content of the page will never change from the old page I left. Of course if I clone that tab, the new page loads and displays properly. Too cute.
What happens if you refresh it?
Address bar shows the progress of reloading the new page, and the old page continues to show.