all the chests were invisible and when i broke them the chest item dropped but were stil invisible. I placed the chests back down and they were stil invisible. The outline showed when i pointed my crosshair on the invisible chests, but it only showed the outline of one chest when it really was a double chest.
Thank you for your report!
We're actually already tracking this issue in MC-150005, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.