After logging into KDE Plasma, several Chromium/Electron-based applications could no longer access their previously stored login sessions. I had to authenticate again in Mailspring and in a browser session connected to Vaultwarden. This occurred once so far, on 2026-08-01. I cannot yet provide reliable reproduction steps. System information: * Operating System: Bazzite 44 * Deployment: bazzite-nvidia-open stable-44.20260515 * KDE Plasma: 6.6.4 * KDE Frameworks: 6.26.0 * Qt: 6.10.3 * Kernel: 6.19.14-ogc5.1.fc44.x86_64 * Session: Wayland * GPU: NVIDIA GeForce RTX 4080 SUPER Relevant log sequence: ```text Aug 01 10:59:18 plasmalogin-helper[2757]: pam_kwallet5: final socket path: /run/user/1000/kwallet5.socket Aug 01 10:59:20 systemd[2720]: Started plasma-kwallet-pam.service - Unlock kwallet from pam credentials. Aug 01 10:59:20 pam_kwallet_init[3110]: socat W address is opened in read-write mode but only supports read-only Aug 01 10:59:23 ksecretd[2759]: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: Connection already associated with an application ID") Aug 01 10:59:32 systemd[2720]: Started dbus-:1.3-org.kde.kwalletd6@0.service. Aug 01 10:59:32 kwalletd6[4208]: g_dbus_proxy_get_object_path: assertion 'G_IS_DBUS_PROXY (proxy)' failed Aug 01 10:59:32 kwalletd6[4208]: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: App info not found for 'org.kde.kwalletd'") Aug 01 10:59:32 kwalletd6[4208]: "Can't find session /org/freedesktop/secrets/session/1" Aug 01 11:00:04 flatpak[5100]: Existing KWallet password is empty. Generating a new one. Aug 01 11:00:04 kwalletd6[4208]: "Can't find session /org/freedesktop/secrets/session/1" Aug 01 11:00:04 flatpak[5100]: KWallet writePassword failed with code: -1 ``` The same errors occurred again at 11:10: ```text Existing KWallet password is empty. Generating a new one. Can't find session /org/freedesktop/secrets/session/1 KWallet writePassword failed with code: -1 ``` Both wallet-related processes were running after login: ```text /usr/bin/ksecretd --pam-login 13 14 /usr/bin/kwalletd6 ``` Installed package versions: ```text kf5-kwallet-5.116.0-5.fc44.x86_64 kf5-kwallet-libs-5.116.0-5.fc44.x86_64 kf6-kwallet-6.26.0-1.fc44.x86_64 kf6-kwallet-libs-6.26.0-1.fc44.x86_64 kwalletmanager5-26.04.0-1.fc44.x86_64 pam-kwallet-6.6.4-1.fc44.x86_64 signon-kwallet-extension-26.04.0-1.fc44.x86_64 xdg-desktop-portal-1.21.1-1.fc44.x86_64 xdg-desktop-portal-gtk-1.15.3-3.fc44.x86_64 xdg-desktop-portal-kde-6.6.4-1.fc44.x86_64 ``` The wallet configuration was not deliberately changed, disabled or reset. The applications worked again after I entered their login credentials. Actual result: Applications received an empty or unavailable password-store value and lost access to existing encrypted login sessions. Expected result: The Secret Service and KWallet session should be initialized consistently after login. Applications must retain access to previously stored cookies, authentication tokens and other encrypted session data. Related report: Bug 509680 was initially suspected because some symptoms and involved components appear similar. However, I was asked to open a new report because the root cause may be different.