The bidi.css file has an incorrect margin size on the fieldset rules, this means that when using an RTL language, things like the subject box in responsive mode are not aligned correctly.

I have added screen shots of both LTR and RTL to show the difference.

File:

bidi.css

Find:

    .rtl fieldset dd, .rtl fieldset.fields1 dd, .rtl fieldset.fields2 dd {

        margin-right: 20px;

    }

Change To:

    .rtl fieldset dd, .rtl fieldset.fields1 dd, .rtl fieldset.fields2 dd {

        margin-right: 0;

    }