Do check the security settings of your containers.

[BeaIank]

Well, if you use sleeping hamsters as containers in your house, do check their security settings.
Mine, where my 4 main account soulstones were, got reset from co-owners to anyone in one of the recent patches and now my soulstones are gone...
I only noticed the security change last night when I noticed my soulstones gone.
Do check yours to make sure you don't lose anything.

 

[Capt. Lucky]

Ouch

 

[Zeke]

Just checked mine and they were still set to co-owners.