Created attachment 126912 [details] test file to reproduce problem attached file "test doc 160819.odt") was created with libreOffice 5.1.5. It contains one line and one entry to the alphabetical index. Now I am adding one line with libreOffice 5.2.0. The complete alphabetical index is removed from the file. Problem happens with Mac OS X 10.11.6 and Windows 7. Very easy to reproduce. Major damage! I would appreciate if you confirm this problem (wbkleinoeder@gmail.com)
On pc Debian x86-64 with master sources updated today, I could reproduce this. Insert entry works but when saving and reopening the file, all entries disappear. Since inserting an entry is ok with 5.1.5, first buggy version is 5.2.0
*** This bug has been marked as a duplicate of bug 100182 ***