diff --git a/packages/webawesome/docs/docs/resources/changelog.md b/packages/webawesome/docs/docs/resources/changelog.md
index ed5c3a974..235328747 100644
--- a/packages/webawesome/docs/docs/resources/changelog.md
+++ b/packages/webawesome/docs/docs/resources/changelog.md
@@ -14,7 +14,8 @@ Components with the <wa-badge variant="warning">Experimental</wa-badge> badge sh
 ## Next
 
 - Fixed a bug in `<wa-combobox>` that prevented the listbox from opening when options were preselected [issue:1883]
-- Fixed a bug in `<wa-popup>` and `<wa-dropdown-item>` that caused an error when removing a popup while it was opening
+- Fixed a bug in `<wa-popup>` and `<wa-dropdown-item>` that caused an error when removing a popup while it was opening [issue:1910]
+- Fixed a bug in `<wa-popup>` and `<wa-dropdown>` that caused errors when shadow DOM queries returned null [issue:1911]
 
 ## 3.1.0
 
diff --git a/packages/webawesome/src/components/dropdown/dropdown.ts b/packages/webawesome/src/components/dropdown/dropdown.ts
index b3a1a70e9..6d9c2c521 100644
--- a/packages/webawesome/src/components/dropdown/dropdown.ts
+++ b/packages/webawesome/src/components/dropdown/dropdown.ts
@@ -138,9 +138,9 @@ export default class WaDropdown extends WebAwesomeElement {
 
   /** Gets all dropdown items slotted in the menu. */
   private getItems(includeDisabled = false): WaDropdownItem[] {
-    const items = this.defaultSlot
-      .assignedElements({ flatten: true })
-      .filter(el => el.localName === 'wa-dropdown-item') as WaDropdownItem[];
+    const items = (this.defaultSlot?.assignedElements({ flatten: true }) ?? []).filter(
+      el => el.localName === 'wa-dropdown-item',
+    ) as WaDropdownItem[];
 
     return includeDisabled ? items : items.filter(item => !item.disabled);
   }
@@ -165,9 +165,9 @@ export default class WaDropdown extends WebAwesomeElement {
 
   /** Syncs item sizes with the dropdown's size property. */
   private syncItemSizes() {
-    const items = this.defaultSlot
-      .assignedElements({ flatten: true })
-      .filter(el => el.localName === 'wa-dropdown-item') as WaDropdownItem[];
+    const items = (this.defaultSlot?.assignedElements({ flatten: true }) ?? []).filter(
+      el => el.localName === 'wa-dropdown-item',
+    ) as WaDropdownItem[];
     items.forEach(item => (item.size = this.size));
   }
 
@@ -230,7 +230,7 @@ export default class WaDropdown extends WebAwesomeElement {
   /** Shows the dropdown menu. This should only be called from within updated(). */
   private async showMenu() {
     const anchor = this.getTrigger();
-    if (!anchor) return;
+    if (!anchor || !this.popup || !this.menu) return;
 
     const showEvent = new WaShowEvent();
     this.dispatchEvent(showEvent);
@@ -270,6 +270,8 @@ export default class WaDropdown extends WebAwesomeElement {
 
   /** Hides the dropdown menu. This should only be called from within updated(). */
   private async hideMenu() {
+    if (!this.popup || !this.menu) return;
+
     const hideEvent = new WaHideEvent({ source: this });
     this.dispatchEvent(hideEvent);
     if (hideEvent.defaultPrevented) {
@@ -720,12 +722,12 @@ export default class WaDropdown extends WebAwesomeElement {
     nativeButton.setAttribute('aria-haspopup', 'menu');
     nativeButton.setAttribute('aria-expanded', this.open ? 'true' : 'false');
 
-    this.menu.setAttribute('aria-expanded', 'false');
+    this.menu?.setAttribute('aria-expanded', 'false');
   }
 
   render() {
     // On initial render, we want to use this.open, for everything else, we sync off of this.popup.active to get animations working.
-    let active = this.hasUpdated ? this.popup.active : this.open;
+    let active = this.hasUpdated ? this.popup?.active : this.open;
 
     return html`
       <wa-popup
diff --git a/packages/webawesome/src/components/popup/popup.ts b/packages/webawesome/src/components/popup/popup.ts
index 7573000af..88997dde7 100644
--- a/packages/webawesome/src/components/popup/popup.ts
+++ b/packages/webawesome/src/components/popup/popup.ts
@@ -317,7 +317,7 @@ export default class WaPopup extends WebAwesomeElement {
   /** Forces the popup to recalculate and reposition itself. */
   reposition() {
     // Nothing to do if the popup is inactive or the anchor doesn't exist
-    if (!this.active || !this.anchorEl) {
+    if (!this.active || !this.anchorEl || !this.popup) {
       return;
     }
 
@@ -498,7 +498,7 @@ export default class WaPopup extends WebAwesomeElement {
   }
 
   private updateHoverBridge = () => {
-    if (this.hoverBridge && this.anchorEl) {
+    if (this.hoverBridge && this.anchorEl && this.popup) {
       const anchorRect = this.anchorEl.getBoundingClientRect();
       const popupRect = this.popup.getBoundingClientRect();
       const isVertical = this.placement.includes('top') || this.placement.includes('bottom');