Noticed that creating a new block displays a series of empty book rows on the configuration page. Once the block has been saved, the book rows appear normal. I've attached a few screenshots so you can see.
Before Saving

After Saving

| Comment | File | Size | Author |
|---|---|---|---|
| No empty rows after saving | 32.41 KB | mshaver | |
| Empty Rows | 33.17 KB | mshaver |
Comments
Comment #1
PixelClever commentedIt doesn't do that in my installation. I just now tested to be sure. Try version 1.6, and make sure you visit the update.php page and clear the cache.
Comment #2
mshaver commentedI wanted to confirm that this seems to be working now and I don't see any extra rows. Thanks, if you patched the issue?