Function fixnum_checkconditions in survey_runtime.js seems to prevent cutting off trailing zeroes in a numeric input field by the following code (lines 216-):

    var matchFollowingZeroes =  cleansedValue.match(/^-?([0-9])*(,|\.)(0+)$/);
    if(matchFollowingZeroes){
        addition = LEMradix+matchFollowingZeroes[3];
    }

The third group of the regex in the first line, however, does not match trailing zeroes which do not immediately follow the decimal sign. The following change should fix this:

    var matchFollowingZeroes =  cleansedValue.match(/^-?([0-9])*(,|\.)(([0-9]*[1-9])?(0+)$/);
    if(matchFollowingZeroes){
        addition = LEMradix+matchFollowingZeroes[5]; // Now it's the fifth group to match
    }

As far as I can see, this patch should also apply to the development version.

Thank you for your work and this great software!