For each upload of a new version after offline edit in Share, a new set of cm:doclib and cm:webpreview renditions are created.
1. Create a text document.
2. Select Edit Offline
3. Upload new version
4. Repeat step 2-3 a couple of times.
5. View the children to this document in the node browser.
Expected: One set of renditions that is updated for each new version
Actual: 2 new renditions are created for each new version, the old ones kept as children.
In order to do step 4 you may have to apply my suggested fix/workaround from
I've also tested this with online edit (make sure you have applied the versionable aspect). The error does not occur in this case.