When a chat reply is highlighted, it temporarily changes the right margin, narrowing the message area and in some cases causing the height to change (which makes elements on the page jump):
The cause is pretty straightforward. In the chat CSS .highlight
is styled like this:
.highlight {
background-color: #ff0 !important
}
But also, separately, for some reason a margin is added:
.message.highlight {
margin-right: 48px
}
No margin should be specified.