Yesterday I was building a structure when I've got to save and exit.
When today I opened the world some blocks (stairs) disappearded.
I tried to place them, save and exit, but when I've reopened I didn't found them.
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[media][media]
Your version is outdated. Use 15w35e.
Dupe of MC-87194

I am having the same issue and I am using the new snapshot 15w35e.
all the oak stairs I placed are gone.