diff --git a/src/popup/scss/misc.scss b/src/popup/scss/misc.scss
index 7a0ea79be6..021f4189af 100644
--- a/src/popup/scss/misc.scss
+++ b/src/popup/scss/misc.scss
@@ -348,3 +348,11 @@ input[type="password"]::-ms-reveal {
         }
     }
 }
+
+// Workaround for rendering error in Firefox sidebar
+// option elements will not render background-color correctly if identical to parent background-color
+select option {
+    @include themify($themes) {
+        background-color: adjust-color(themed('inputBackgroundColor'), +1);
+    }
+}