I experienced a similar bug on testlive (also singleplayer, but unmodded in this instance) - after a crash one of my wooden boxes showed up empty. I started using it for other stuff, then after a restart all the original contents reappeared. I can’t say for sure if the stuff added in between vanished or not - but the ‘reappearance after restart’ element makes me think it’s substantially the same effect. For what it’s worth, it hasn’t happened again since (and I’m pretty sure I’m probably using the same box - but it probably has been picked up and placed back down a few times since then - which may (or may not…) have the same effect as breaking it like @stelagel suggests).
I didn’t notice whether or not mine said ‘No owner’ - I don’t think it did, but I may just not have noticed - but that sounds similar to a bug that’s been reported by a few of the console guys since the patch:
The good news is, it sounds like it’s understood and being sorted. (I’m not sure if that covers the issue with preservation boxes as well, or not - hopefully @CeeDee’s report gets added to the data they are using, assuming it’s directly related 
)