Fix content-set + accordion bug (#1742)

Author: castastrophe

CHANGELOG-1.x.md

@@ -2,9 +2,10 @@
 
 - [](https://github.com/patternfly/patternfly-elements/commit/) fix: pfe-autocomplete update aria-selected attribute
 - [d3ea7fa](https://github.com/patternfly/patternfly-elements/commit/d3ea7facb0c36b7f3e20e2568bdc4bf2e5a5a852) feat: Graceful failure for component registry
-- [](https://github.com/patternfly/patternfly-elements/commit/) fix: container sass placeholder using incorrect variable for spacing (#1522)
 - [099dc3e](https://github.com/patternfly/patternfly-elements/commit/099dc3e2d3ce732a32ecde0644f5c03ec1e8dd9c) fix: Accordion alignment with latest design kit
 - [5f88c39](https://github.com/patternfly/patternfly-elements/commit/5f88c3963f8a6c13a9aeba6e9f664678453d46ce) fix: Jump links parseInt for IE11
+- [43a904e](https://github.com/patternfly/patternfly-elements/commit/43a904e2ce4f2ef7182f803bf35ade463e7c2f1d) fix: container sass placeholder using incorrect variable for spacing (#1522)
+- [](https://github.com/patternfly/patternfly-elements/commit/) fix: accordion rendering slotted content in the header
 
 # 1.10.1 (2021-07-12)
 

elements/pfe-accordion/src/pfe-accordion-header.js

@@ -196,8 +196,10 @@ class PfeAccordionHeader extends PFElement {
         // Capture it's assigned nodes for validation
         let slotted = node.assignedNodes();
         // If slotted elements were found, add it to the nodeList
-        if (slotted && slotted.length > 0) nodes[idx] = slotted;
-        else {
+        if (slotted && slotted.length > 0) {
+          // Remove the slot from the set, add the slotted content
+          nodes.splice(idx, 1, ...slotted);
+        } else {
           // If no content exists in the slot, check for default content in the slot template
           const defaults = node.children;
           if (defaults && defaults.length > 0) nodes[idx] = defaults[0];