Did you find a solution to this problem as I also have one

I have the same problem, and can't find any automatic session control open setting, some settings in the POS are not accessible when the POS status is "Opening Control" has anyone found a solution to this ? 

That is just a fluff non-answer. The only thing your "Automatic Session Start" brings up is this very odoo post. 

1 Some Odoo POS setups automatically open a new session after closing the previous one. This is often due to misconfigured default behavior or an overlooked automation setting.

2 Check for any setting related to Automatic Session Start or similar behavior. This setting might exist as a toggle or default configuration in Odoo 18. ( Disable if found) 

3 If you're testing with multiple browser tabs or devices, one instance might trigger session openings unintentionally
 

Hey everyone!

This might be happening because of the time settings in UrbanPiper.

Here's how to check your store closing hours:

Go to "PoS" (Point of Sale) /  Clic "Configuration" / Choose "UrbanPiper" / "Store Timings" / Check the time in the "Ending hour" field. If it's set later than when you actually close the register, it might trigger an automatic reopening.

Hope this does the trick!