Some operations that modify an object lose any title or description that the object may have had.
An example:
1) Draw a rectangle (with the rectangle tool).
2) Give the rectangle a title (right click on the rectangle, select Object Properties, type in a title, click Set, and then close the dialog).
3) Convert the rectangle to a path (Path -> Object to Path).
4) Notice that the converted rectangle has no title (right click on it, and select Object Properties).
Expected behaviour: metadata ought to be preserved whenever it's reasonable to do so.
This problem has always existed, but it's more serious now that there's a UI for adding titles and descriptions, as users won't appreciate having titles and descriptions that they've added thrown away without good reason.
Operations that have this problem include the following:
path simplify
object-to-path
stroke-to-path
convert-to-text
unflow
flow into frame
difference (maybe)
ungrouping a group of one item (any title/description should be passed down to the child item, unless the child item already has its own)
import (any top-level title/description of the image to be imported should become the title/description for the new object that represents the imported image)
Assigning to myself, as I'm intending to do some more work on titles and descriptions, which will probably include some of the above.