Support › General › select_advanced doesn't display the saved value
The select_advanced dropdown doesn't display the saved value after the 4.15.6 update.
Please do more tests before each release. I use Meta Box in a lot of clients sites and bugs like this make the plugin unreliable.
I'm very sorry for the problem. I updated select2 library according to a user request, and I did tests for it. I'll check that again and will fix it if I find any bug.
Thanks for your bug report!