The radio buttons I do use on my custom charactersheet do reset. They are not wrapped inside of a fieldset. The bug appears: Chrome Internet Explorer Only on the production server Only as long as they are not wrapped inside of a fieldset Even with all scripts disabled Behaviour Select radiobutton X Selection resets to last value Y Select radiobutton X Value stored Expected Behaviour Select radiobutton X Value stored Wrapping the buttons in a fieldset does remove this problem but it adds various other problems (breaking the css tabs wizardry, breaking autocalc fields inside of it, problems with fieldsets in fieldsets for repeating sections). On the developement server the sheet works fine. The bug does not appear for all radio button groups. I use two: One for the "class" of the character and one for the "tab". The code is both times the same. The "tab" radio buttons reset. Manually deleting the attributes used did solve the problem. Possible reason for the bug, it could be that something lead to duplicate attributes maybe, this is the reason I consider the most likely? Edit: Working through the most important characters there is definetly a bug duplicating the attributes, some of the characters have half a dozen "tab variables" oO