This glitch appear when user attach a file to a ticket.
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I found this as a work around:
in file staff-mobile.css around line 313 add this under @media only screen and (max-width: 760px) {
.icon-paperclip:before, .icon-paper-clip:before {
margin-left: -200px;
margin-bottom: -5%;
}
Some one with more css skills can probably find a more optimal solution 😛