I think I may have been caught out by that bug, although I wasn’t switching shares quickly. I changed shares, and it highlighted one, but showed details for another. Foolishly, I changed the details (the share name) to what it should have been. This made it rename the wrong share to the name of the share it had highlighted, with no warning, which entirely overwrote the original share of that name. All content gone.
http://community.wd.com/t5/My-Cloud/Renaming-Shares-a-word-of-caution/m-p/907143
