ID Safe & Disappearing Log-ins

Although I have read discussion on this topic, I haven’t seen a definitive solution it seems. Several of my Identity Safe Log-Ins disappear from the browser pull-down - especially Facebook, after a few days use. I have tried resetting my ID Safe profile & have contacted Symantec Tech Support, (who simply went through & deleted the log-ins & had me re-enter them; something I could have done!) but the problem persists. The particularly weird thing about this problem is that it has only occurred w/ my desktop and, so far, has not happened with my laptop. That this problem is annoying would be an understatement! Does anyone have a real fix to this? Thanks!