[UI] Fixed bug in CUSTOM sites filtering (thanks barbaz for reporting).

src/ui/ui.css

@@ -146,6 +146,11 @@ html.tor .tor, html:not(.tor) .not-tor {
 
 }
 
+
+.site.filtered, .site.filtered + .customizer {
+  display: none;
+}
+
 #sites .customizing .presets {
   padding-bottom: 0 !important;
   margin-bottom: 0 !important;

src/ui/ui.js

@@ -921,9 +921,9 @@ var UI = (() => {
       key = Sites.toExternal(key);
       for (let r of this.allSiteRows()) {
         if (r.querySelector(".full-address").textContent.trim().includes(key)) {
-          r.style.display = "";
+          r.classList.remove("filtered");
         } else {
-          r.style.display = "none";
+          r.classList.add("filtered");
         }
       }
     }