Backlinks not appearing for some links
Steps to recreate:
1. Create a new notebook
2. On the Home page, create a link to a non-existing page using wiki syntax. Example: [[new_page]]
3. Press Control-R
4. Click the new_page link. There are no backlinks listed for new_page, even though the Home page links to it.
Rebuilding the index doesn't help. However, the backlink will appear if you do the following: go to the Home page, right click the new_page link, select "Edit Link", and click the "Link" button. Click the new_page link. A backlink to the Home page is now shown.
Using zim 0.52 on linux.