1. make 3d scatter plot

2. add one special point, open PD dialog, go to label tab, check enable, check leader line, uncheck auto offset, set X=600, click OK
   ==> no leader line

3. reopen PD dialog for special point, go to label tab

==> leader line is not checked

4. check leader line again, change connect of leader line to straight, click OK
--> there is leader line

Fixed in Origin2024.

1. make 3d scatter plot

2. add one special point, open PD dialog, go to label tab, check enable, check leader line, uncheck auto offset, set X=600, click OK

3. select page, right click, copy format: all

4. make new 3d scatter plot, paste format

==> checkbox of leader line is not checked

Fixed in Origin2024