Hi Tamas,
Just a slight correction.
Well the is correct id is ses[0]/wnd[1]/tbar[0]/btn[12]
ONLY THIS ID was changed in one of the kernel patch couple of months back to accommodate future enhancements. Obviously, we had some issues for customers who had recorded their script before that.
For example, Steve posted the following and mentioned about a single issue which was the change in id when he upgraded his kernel.
But in the recent note release, changes were made to detect the OLD id and change to the new one.
In short, if you had a script recorded earlier with old id, it will not impact your script.
Regards,
Sushant