Hi,

finally I solved the issue with Chrome (not the Firefox issue but as I can print properly from Chrome I don't care about Firefox anymore).

I edited the font and the table size from the ticket css (/usr/lib/python2.7/dist-packages/odoo/addons/point_of_sale/static/src/css/pos.css)

.pos .pos-sale-ticket {

    text-align: left;

    width: 300px;

    background-color: white;

    margin: 20px;

    padding: 15px;

    font-size: 14px;

    padding-bottom:30px;

    display: inline-block;

    font-family: "Monospace"; -> originally "Inconsolata"

    border: solid 1px rgb(220,220,220);

    border-radius: 3px;

    overflow: hidden;

}

.pos .pos-sale-ticket pre{

    font-family: "Monospace"; -> originally "Inconsolata"

}

.pos .pos-sale-ticket table {

    width: 95%; -> originally "100%"

    border: 0;

    table-layout: fixed;

}

Changing the font I fixed de no space between words and changing the width % I fixed the right margin cut.

I hope this helps if anyone get the same issue. (and if someone know how to fix the Firefox thing you are welcome!)

Regards,