gitea/templates/repo/issue/sidebar/participant_list.tmpl

{{if .Participants}}
	<div class="divider"></div>
	<span class="text"><strong>{{ctx.Locale.Tr "repo.issues.num_participants" .NumParticipants}}</strong></span>
	<div class="ui list tw-flex tw-flex-wrap">
		{{range .Participants}}
			<a {{if gt .ID 0}}href="{{.HomeLink}}"{{end}} data-tooltip-content="{{.GetDisplayName}}">
				{{ctx.AvatarUtils.Avatar . 20 "tw-my-0.5 tw-mr-1"}}
			</a>
		{{end}}
	</div>
{{end}}