Power manager does not suspend system when battery is about to run out

Xfce's power manager doesn't suspend the system when battery is about to run out due to

(xfce4-power-manager:4405): xfce4-power-manager-WARNING **: 16:13:00.333: Unable to inhibit systemd sleep: GDBus.Error:org.freedesktop.DBus.Error.LimitsExceeded: Maximum number of inhibitors (0) reached, refusing further inhibitors.

if InhibitorsMax=0 is set.

Xfce's power manager also doesn't suspend the system when the battery's about to run out if InhibitorsMax is set to anything higher than 0 since a lot of broken software sets some inhibitor that lingers.

Xfce's power manager should simply ignore all that broken inhibitor mess on low battery. No amount of systemd inhibitor stupidity will prevent a laptop from powering off the battery runs out of juice, and system hibernation (or syspend to RAM on broken linux distributions without that basic feature) is always preferable to the machine turning off because xfce's power manager doesn't do what it's supposed to do.