[lyhiz]

that was help https://wordpress.org/plugins/bbpress-bbcode/ and topic https://bbpress.org/forums/topic/bbpress-2-0-bbcode/

[lyhiz]

Remove border and add

height: 15px;
width: 15px;
or

height: 0px;
width: 0px;

Example:

/* =Avatars
————————————————————– */

#bbpress-forums p.bbp-topic-meta img.avatar,
#bbpress-forums ul.bbp-reply-revision-log img.avatar,
#bbpress-forums ul.bbp-topic-revision-log img.avatar,
#bbpress-forums div.bbp-template-notice img.avatar,
#bbpress-forums .widget_display_topics img.avatar,
#bbpress-forums .widget_display_replies img.avatar {
float: none;
margin-bottom: -7px;
height: 15px;
width: 15px;

Live:

http://gameboss.eu/forums/forum/gameboss/