When createing a tabset, if you select “Make the tabset fixed/sticky” option and then change names of tabse then it does not save the option and you must re-open tab properties to reset it.
Steps to reproduce
1) add a row
2) add a TabSet
3) Edit the tabset properties
4) Firstly – enter a name in the First tab to over write Tab1
5) Secondly – click the checkbox “Make the tabset fixed/sticky …”
6) Close the tabset properties
7) Open the tabset propeties (checkbox is unchecked)