Release | Endless OS 6.0.0 (and 5.1.3)

The upgrade went flawlessly on my Acer TravelMate Spin B118-RN. There are some obscure warning messages when using distrobox:

WARN[0000] Failed to decode the keys [“storage.options.ostree_repo”] from “/sysroot/home/bernhard/.config/containers/storage.conf”

but distrobox appears to run despite these messages, does somebody have ideas how to resolve them?

BTW: congratulations: I had asked for a possibility for hibernation some time ago and found now deeply hidden in the power configurations the option for hibernating (selection between Suspend, Power Off, Hibernate, and Nothing is possible)
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and hibernation appears to function without problems, when using the power button. Is there any chance to configure also “Lid close” for hibernate instead of suspend? I could not find any configuration option for it in EndlessOS; although I found instructions for Ubuntu I am curious, if these also apply for EndlessOS. Are these applicable?