diff --git a/.changeset/fair-actors-decide.md b/.changeset/fair-actors-decide.md
new file mode 100644
index 000000000..fb4acdea8
--- /dev/null
+++ b/.changeset/fair-actors-decide.md
@@ -0,0 +1,5 @@
+---
+'@lion/ui': patch
+---
+
+[overlays] fixes (responsive backdrop/select-rich/tooltip)
diff --git a/packages/ui/components/overlays/src/OverlayController.js b/packages/ui/components/overlays/src/OverlayController.js
index dda94fff7..4fab05565 100644
--- a/packages/ui/components/overlays/src/OverlayController.js
+++ b/packages/ui/components/overlays/src/OverlayController.js
@@ -1,4 +1,3 @@
-import { EventTargetShim } from '@lion/ui/core.js';
 import { adoptStyles } from 'lit';
 import { overlays } from './singleton.js';
 import { containFocus } from './utils/contain-focus.js';
@@ -129,7 +128,7 @@ const supportsCSSTypedObject = window.CSS?.number && document.body.attributeStyl
  * bottom/top/left/right sheets etc.
  *
  */
-export class OverlayController extends EventTargetShim {
+export class OverlayController extends EventTarget {
   /**
    * @constructor
    * @param {OverlayConfig} config initial config. Will be remembered as shared config
@@ -973,22 +972,24 @@ export class OverlayController extends EventTargetShim {
     if (this.inheritsReferenceWidth) {
       this._handleInheritsReferenceWidth();
     }
-
     if (this.visibilityTriggerFunction) {
-      this._handleUserInteraction({ phase });
+      this._handleVisibilityTriggers({ phase });
     }
   }
 
   /**
    * @param {{ phase: OverlayPhase }} config
    */
-  _handleUserInteraction({ phase }) {
+  _handleVisibilityTriggers({ phase }) {
     if (typeof this.visibilityTriggerFunction === 'function') {
       if (phase === 'init') {
-        this.__userInteractionHandler = this.visibilityTriggerFunction({ phase, controller: this });
+        this.__visibilityTriggerHandler = this.visibilityTriggerFunction({
+          phase,
+          controller: this,
+        });
       }
-      if (this.__userInteractionHandler[phase]) {
-        this.__userInteractionHandler[phase]();
+      if (this.__visibilityTriggerHandler[phase]) {
+        this.__visibilityTriggerHandler[phase]();
       }
     }
   }
@@ -1053,10 +1054,14 @@ export class OverlayController extends EventTargetShim {
         break;
       }
       case 'show':
-        this.backdropNode.classList.add(`overlays__backdrop--visible`);
+        if (this.config.hasBackdrop) {
+          this.backdropNode.classList.add(`overlays__backdrop--visible`);
+        }
         this.__hasActiveBackdrop = true;
         break;
       case 'hide':
+      case 'teardown':
+        this.backdropNode.classList.remove(`overlays__backdrop--visible`);
         this.__hasActiveBackdrop = false;
         break;
     }
diff --git a/packages/ui/components/overlays/test/OverlayController.test.js b/packages/ui/components/overlays/test/OverlayController.test.js
index 2cdc8e8c7..d201d4598 100644
--- a/packages/ui/components/overlays/test/OverlayController.test.js
+++ b/packages/ui/components/overlays/test/OverlayController.test.js
@@ -1515,6 +1515,22 @@ describe('OverlayController', () => {
       expect(ctrl.contentWrapperNode.classList.contains('overlays__overlay-container--top-right'));
       expect(ctrl.isShown).to.be.true;
     });
+
+    it('disables backdrop when switching to hasBackrop "false"', async () => {
+      const ctrl = new OverlayController({
+        ...withLocalTestConfig(),
+        contentNode: /** @type {HTMLElement} */ (await fixture(html`<div>content1</div>`)),
+        hasBackdrop: true,
+      });
+      await ctrl.show(); // Popper adds inline styles
+      expect(ctrl.backdropNode).not.to.be.undefined;
+      expect(Array.from(ctrl.backdropNode.classList)).to.include('overlays__backdrop--visible');
+
+      ctrl.updateConfig({
+        hasBackdrop: false,
+      });
+      expect(Array.from(ctrl.backdropNode.classList)).to.not.include('overlays__backdrop--visible');
+    });
   });
 
   describe('Accessibility', () => {
diff --git a/packages/ui/components/select-rich/src/LionSelectRich.js b/packages/ui/components/select-rich/src/LionSelectRich.js
index 9453935da..f00a38e7c 100644
--- a/packages/ui/components/select-rich/src/LionSelectRich.js
+++ b/packages/ui/components/select-rich/src/LionSelectRich.js
@@ -336,6 +336,8 @@ export class LionSelectRich extends SlotMixin(ScopedElementsMixin(OverlayMixin(L
   _defineOverlayConfig() {
     return {
       ...withDropdownConfig(),
+      // Needs more advanced behavior (see `__invokerOnClick`)
+      visibilityTriggerFunction: undefined,
     };
   }
 
diff --git a/packages/ui/components/tooltip/src/LionTooltip.js b/packages/ui/components/tooltip/src/LionTooltip.js
index a91ea0169..6106e3c78 100644
--- a/packages/ui/components/tooltip/src/LionTooltip.js
+++ b/packages/ui/components/tooltip/src/LionTooltip.js
@@ -32,6 +32,10 @@ export class LionTooltip extends ArrowMixin(OverlayMixin(LitElement)) {
         :host([hidden]) {
           display: none;
         }
+
+        ::slotted([slot='content']) {
+          width: max-content;
+        }
       `,
     ];
   }
@@ -54,9 +58,19 @@ export class LionTooltip extends ArrowMixin(OverlayMixin(LitElement)) {
   /** @protected */
   // eslint-disable-next-line class-methods-use-this
   _defineOverlayConfig() {
+    const superCfg = super._defineOverlayConfig();
+    const tooltipCfg = withTooltipConfig({ invokerRelation: this.invokerRelation });
     return /** @type {OverlayConfig} */ ({
-      ...super._defineOverlayConfig(),
-      ...withTooltipConfig({ invokerRelation: this.invokerRelation }),
+      ...superCfg,
+      ...tooltipCfg,
+      popperConfig: {
+        ...(superCfg.popperConfig || {}),
+        ...(tooltipCfg.popperConfig || {}),
+        modifiers: [
+          ...(superCfg.popperConfig?.modifiers || []),
+          ...(tooltipCfg.popperConfig?.modifiers || []),
+        ],
+      },
     });
   }
 }
diff --git a/packages/ui/components/tooltip/test/lion-tooltip.test.js b/packages/ui/components/tooltip/test/lion-tooltip.test.js
index 7420767af..a7e4e3d3c 100644
--- a/packages/ui/components/tooltip/test/lion-tooltip.test.js
+++ b/packages/ui/components/tooltip/test/lion-tooltip.test.js
@@ -227,8 +227,7 @@ describe('lion-tooltip', () => {
       expect(el._arrowNode).to.be.displayed;
     });
 
-    // TODO: promise for dynamic import popper does not resolve?
-    it.skip('makes sure positioning of the arrow is correct', async () => {
+    it('makes sure positioning of the arrow is correct', async () => {
       const el = /** @type {LionTooltip} */ (
         await fixture(html`
           <lion-tooltip