Hi Tammy,

this not a bug

i think i found it

see the attach image, if that you want tell me and will share the code

in your theme css file search for codes below and replace it with new codes below too, if  you don't found the main codes insert them 

1- found this code ' .ow_chat_message_block .ow_chat_message textarea {

    height: 42px;

    line-height: 17px;

    font-size: 12px;

    position:relative;

    overflow:auto;

    border: none;

    border-radius: 0;

    margin: 0;

    min-height: 17px;

    padding: 12px 36px 4px 6px;

    resize: none;

    width: 100%;

} '

and replace it with '.ow_chat_message_block .ow_chat_message textarea {

    height: 42px;

    line-height: 17px;

    font-size: 12px;

    position:relative;

    overflow:auto;

    border: none;

    border-radius: 0;

    margin: 0;

margin-bottom:30px;

    min-height: 17px;

    padding: 12px 36px 4px 6px;

    resize: none;

    width: 100%;

} '

2- find this code ' .ow_chat_message .ow_attachment_icons {

    float: right;

    position: absolute;

    top: 10px;

    right: 8px;

    z-index: 2;

}'

and replace it with ' .ow_chat_message .ow_attachment_icons {

    float: right;

    position: absolute;

    top: 45px;

    right: 8px;

    z-index: 2;

} '

and also to see changes you should enable dev mode, you did that ?

if you want let me check it and pm me

or just be sure that the codes not exist and past it or replace old codes with new 

the code start with .ow and ends with }

the code tested with oxwall default attachment, i don't now how will going with 3d party plugins