telophase says there's a workaround; which doesn't work for me either, even the random clicking, but again may be down to ancient Firefox. I'd cross-post from DW, but with no edit entries button, I can't change the icons.
Damn damn damn damn damn.
ETA: Evidently Telophase's question mark takes you to what, for me, was an occasionally appearing pop-up that says Hey we changed LJ tell us what you think! (That button takes you, quite rightly, to the 'report a bug' feature.) Under that is a 'return to old style' button. Pray that we remain changed to the old style.