It seems i have caught reason of this issue.
We should disable "Save and Proceed" when "Save" is disabled.
And "Save" button is disabled when we have some input validation errors.
I have met such kind of bug during testing of plugin settings: https://bugs.launchpad.net/fuel/+bug/1501807
It seems i have caught reason of this issue. /bugs.launchpad .net/fuel/ +bug/1501807
We should disable "Save and Proceed" when "Save" is disabled.
And "Save" button is disabled when we have some input validation errors.
I have met such kind of bug during testing of plugin settings: https:/