Issue #2424733 by idebr: Node preview backlink RTL button :active styling is applied to LTR

core/themes/bartik/css/components/node-preview.css

@@ -50,7 +50,7 @@
   border: 1px solid #0048c8;
   box-shadow: inset 0 1px 2px rgba(0, 0, 0, .25);
 }
-.node-preview-backlink:active {
+[dir="rtl"] .node-preview-backlink:active {
   background: url(../../../../misc/icons/000000/chevron-right.svg) right no-repeat, -webkit-linear-gradient(top, #0e69be, #2a93ef);
   background: url(../../../../misc/icons/000000/chevron-right.svg) right no-repeat, linear-gradient(to bottom, #0e69be, #2a93ef);
 }