diff -u b/core/misc/ajax.es6.js b/core/misc/ajax.es6.js
--- b/core/misc/ajax.es6.js
+++ b/core/misc/ajax.es6.js
@@ -1036,24 +1036,8 @@
       // Apply any settings from the returned JSON if available.
       const settings = response.settings || ajax.settings || drupalSettings;
 
-      // Store SVG elements
-      const svgStorage = {};
-
       // Parse response.data into an element collection.
-      const $newContent = $($.parseHTML(response.data, true).map((element) => {
-        // If the response contains an SVG, replace it with a placeholder.
-        if (element.nodeName && element.nodeName === 'svg') {
-          // Create an ID to reference later.
-          const hash = `svg-${Math.random().toString(36).substring(7)}`;
-          svgStorage[hash] = element.outerHTML;
-
-          // Create a plceholder DIV that will be replaced with the SVG.
-          const svgPlaceHolder = document.createElement('div');
-          svgPlaceHolder.id = hash;
-          return svgPlaceHolder;
-        }
-        return element;
-      }));
+      const $newContent = $('<div></div>').html(response.data).contents();
 
       // If removing content from the wrapper, detach behaviors first.
       switch (method) {
@@ -1071,14 +1055,6 @@
       // Add the new content to the page.
       $wrapper[method]($newContent);
 
-      // If there is any SVG data, start replacing them.
-      if (Object.keys(svgStorage).length) {
-        Object.keys(svgStorage).forEach((key) => {
-          // Replace each placeholder DIV with the saved SVG data.
-          $(`#${key}`).replaceWith(svgStorage[key]);
-        });
-      }
-
       // Immediately hide the new content if we're using any effects.
       if (effect.showEffect !== 'show') {
         $newContent.hide();
diff -u b/core/misc/ajax.js b/core/misc/ajax.js
--- b/core/misc/ajax.js
+++ b/core/misc/ajax.js
@@ -487,19 +487,7 @@
 
       var settings = response.settings || ajax.settings || drupalSettings;
 
-      var svgStorage = {};
-
-      var $newContent = $($.parseHTML(response.data, true).map(function (element) {
-        if (element.nodeName && element.nodeName === 'svg') {
-          var hash = 'svg-' + Math.random().toString(36).substring(7);
-          svgStorage[hash] = element.outerHTML;
-
-          var svgPlaceHolder = document.createElement('div');
-          svgPlaceHolder.id = hash;
-          return svgPlaceHolder;
-        }
-        return element;
-      }));
+      var $newContent = $('<div></div>').html(response.data).contents();
 
       switch (method) {
         case 'html':
@@ -515,12 +503,6 @@
 
       $wrapper[method]($newContent);
 
-      if (Object.keys(svgStorage).length) {
-        Object.keys(svgStorage).forEach(function (key) {
-          $('#' + key).replaceWith(svgStorage[key]);
-        });
-      }
-
       if (effect.showEffect !== 'show') {
         $newContent.hide();
       }