Would like you to try 3 things :

1. open that section with 4 tabs. Go to the first tab and save (and check in, if thats enabled). It should land up on the first tab when u execute the flow

2. Make sure to make changes to the actual section containing 4 sections. Check if you got a section within the section containing those 4 tabs. Sometimes when you have another section, you may think that the edits are getting saved, but it doesn't. 

3. Clear your browser cache. Sometimes that plays a role

Hi,

I have tried checking the Use Case at my end.

I suspect that issue is because, in the section you might have  selected the fourth tab (i.e. focus is on the 4th tab) and saved the section.So by default 4th tab getting opened at run time.

If you want to open first tab by default open the section (which contains the tabbed group layout)and select the first tab(i.e. focus should be on the first tab ) then save the section.

Regards,

Nishitha

Hi Karim

Open the Section rule, Select the Tab which you want to display byDefault, then Save the rule and do check in .. Then your problem will be resolved. Enjoy !!