Sincerely I don't know, I never used the GUI.
To be more sincere, since:
* version 5.x is having problems and isn't reliable (especially on buying prices, pair cycles, etc.)
* version 3.x is frequently double-buying even if it's not allowed in config (etc)...
... then I simply didn't use gunthy for a week (except in slow mode and buy enabled=false to sell bags), and I wait for something that works.
Very sorry.