> Which version of Firefox are you using? I cannot confirm this problem with > 52.2.0 (64-Bit). I deleted and re-added a password. The entry is present in > the KWallet Manager and in Firefox, and used at the next login.
Interesting. I see the problem in firefox-esr (52.2) and firefox (54.0), but not in thunderbird (52.2). I suspect it may have something to do with the new password entry widget in FF50+?