I can reproduce on Manjaro (ArchLinux). The system is going into standby mode twice, when on power supply, and first to standby, then to hibernation, after woke up from standby.
$ xfconf-query -vl -c xfce4-power-manager /xfce4-power-manager/brightness-level-on-battery 50 /xfce4-power-manager/brightness-on-ac 120 /xfce4-power-manager/brightness-on-battery 90 /xfce4-power-manager/critical-power-action 1 /xfce4-power-manager/dpms-on-ac-off 11 /xfce4-power-manager/dpms-on-ac-sleep 10 /xfce4-power-manager/hibernate-button-action 2 /xfce4-power-manager/inactivity-on-ac 20 /xfce4-power-manager/inactivity-on-battery 15 /xfce4-power-manager/lid-action-on-ac 1 /xfce4-power-manager/lid-action-on-battery 2 /xfce4-power-manager/power-button-action 3 /xfce4-power-manager/show-tray-icon 2 /xfce4-power-manager/sleep-button-action 1 /xfce4-power-manager/spin-down-on-ac true
I can reproduce on Manjaro (ArchLinux). The system is going into standby mode twice, when on power supply, and first to standby, then to hibernation, after woke up from standby.
$ xfconf-query -vl -c xfce4-power-manager power-manager/ brightness- level-on- battery 50 power-manager/ brightness- on-ac 120 power-manager/ brightness- on-battery 90 power-manager/ critical- power-action 1 power-manager/ dpms-on- ac-off 11 power-manager/ dpms-on- ac-sleep 10 power-manager/ hibernate- button- action 2 power-manager/ inactivity- on-ac 20 power-manager/ inactivity- on-battery 15 power-manager/ lid-action- on-ac 1 power-manager/ lid-action- on-battery 2 power-manager/ power-button- action 3 power-manager/ show-tray- icon 2 power-manager/ sleep-button- action 1 power-manager/ spin-down- on-ac true
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