I was recently offered a copy of Handling the Undead and it is currently on its way to me.  There are 2 other versions on my WL.  When I checked today, I found that neither of the other versions were on hold.  Usually when I've had more than one version on my WL, others are automatically highlighted in pink and put on hold, but not this time. Did I miss something?  Is the system no longer doing this automatically?  The versions were linked on the same page when I put them on my WL in the first place, so they should have triggered the hold feature. 

If they were offered to you when you chose to WL the first one, they should have been put on hold. Sounds like you may have found another glitch?

Yes, they were all listed on the same page when I hit the expand button to WL the book in the first place.  Thought it must be a glitch, but I've been out of town for the last week and wasn't sure if I'd missed a change or something.  I've gone ahead and put the other two versions on hold myself to avoid having a second version offered while the current one is in transit. 

If a book is a non-ISBN listing, the system doesn't link it to other books with the same title.  Also, if the title is listed differently, or if the author is listed differently, or is misspelled, that could make it so that the different editions aren't linked.  But if they were all on the same "expand wish list" page, they should be linked, and should be on hold.

IIRC the system will 'hold' other editions if they are linked in the system, but not all are linked.  Or, it could just be a glitch.  Good you noticed tho, before the system ordered another copy for you.

I have been having this problem for over a month and reported it.  And mine too were linked--all listed as various options when I first put the title on my WL.