On my LW 3.9.2, regardless of the version of Java it's running in, there are 2 recurring annoyances I see on occasion. One is the tools button will maybe a third of the time show the two choices, and when I move the mouse over options, the two choices will disappear until I put the mouse back over the tools button, and then I can select one of the two options. Another thing that happens just as infrequently is the x in the close search tab not responding. I haven't figured out what I have to do to get it to close, but usually after going to do something else in the app, or clicking on another tab & then back again, the x'll close the tab.
I have another post regarding my java troubles, so I won't get into that here, but I guess that could be considered a bug, too- I dunno, it could be operator error. Just figured I'd post what's going on in mine, so LW people could know.