When playing with property sets, the order of rows is slightly different each time.
To reproduce:
- create test1-12 all at the same time
- after saving, they're ordered alphabetically: test1, test10, test11, test12, test2.
- edit test2 & save. The order is: test1, test7, test8, test9, test10, test11, test12, test2
- edit test8 & save: test1, test4, test5, test6, test7...
- edit test1 & save: test1, test12, test2, ...
- edit test11 & save: test1, test9, test10, ...