diff --git a/CHANGELOG.md b/CHANGELOG.md
index bd241ee..4d13169 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Unreleased
 
+* Fix premeture closing of modals and slideovers (#284, #289)
+* Update Tailwind v4 documentation
+
+
 # 6.1.3
 
 * Support multiple classes for dropdown transitions
diff --git a/src/slideover.js b/src/slideover.js
index cf68339..bcdbc9c 100644
--- a/src/slideover.js
+++ b/src/slideover.js
@@ -33,7 +33,10 @@ export default class extends Controller {
   }
 
   backdropClose(event) {
-    if (event.target.nodeName == "DIALOG") this.close()
+    if (event.target.nodeName !== "DIALOG") return;
+    if (window.getSelection().toString().length > 0) return;
+
+    this.close();
   }
 
   show() {
diff --git a/test/fixtures/slideover.html b/test/fixtures/slideover.html
index a37dc09..8dd6fd1 100644
--- a/test/fixtures/slideover.html
+++ b/test/fixtures/slideover.html
@@ -1,6 +1,7 @@
 <div data-controller="slideover">
-  <dialog data-slideover-target="dialog" class="slideover h-full max-h-full m-0 w-96 p-8 backdrop:bg-black/80">
+  <dialog data-slideover-target="dialog" data-action="click->slideover#backdropClose" class="slideover h-full max-h-full m-0 w-96 p-8 backdrop:bg-black/80">
     <p>This slideover dialog has a groovy backdrop!</p>
+    <input type="text" value="Select this text" class="border p-1" data-testid="slideover-input">
     <button autofocus data-action="slideover#close" class="px-2.5 py-1 bg-blue-500 text-white text-sm rounded">Close</button>
   </dialog>
   <button data-action="slideover#open" class="bg-blue-500 hover:bg-blue-700 text-white text-sm font-bold py-1 px-2.5 rounded">Open slideover</button>
diff --git a/test/slideover_test.js b/test/slideover_test.js
index a63e136..8be3aba 100644
--- a/test/slideover_test.js
+++ b/test/slideover_test.js
@@ -15,10 +15,62 @@ describe('SlideoverController', () => {
     })
 
     it('opens dialog', () => {
-      const dialog = document.querySelector("dialog")
-      expect(dialog.hasAttribute("open")).to.equal(false)
+      const dialog = document.querySelector('dialog')
+      expect(dialog.hasAttribute('open')).to.equal(false)
       document.querySelector("[data-action='slideover#open']").click()
-      expect(dialog.hasAttribute("open")).to.equal(true)
+      expect(dialog.hasAttribute('open')).to.equal(true)
+    })
+
+    it('closes the slideover when clicking on the backdrop', async () => {
+      const dialog = document.querySelector('dialog')
+      const openSlideoverButton = document.querySelector("[data-action='slideover#open']")
+      openSlideoverButton.click()
+      expect(dialog.hasAttribute('open')).to.equal(true)
+
+      // Simulate clicking on the dialog element itself (the backdrop)
+      const clickEvent = new MouseEvent('click', { bubbles: true })
+      Object.defineProperty(clickEvent, 'target', { value: dialog })
+      dialog.dispatchEvent(clickEvent)
+
+      expect(dialog.hasAttribute('closing')).to.equal(true)
+    })
+
+    it('does not close the slideover when clicking inside slideover content', async () => {
+      const dialog = document.querySelector('dialog')
+      const openSlideoverButton = document.querySelector("[data-action='slideover#open']")
+      const input = document.querySelector("[data-testid='slideover-input']")
+      openSlideoverButton.click()
+      expect(dialog.hasAttribute('open')).to.equal(true)
+
+      // Simulate clicking on the input inside the modal
+      input.click()
+
+      expect(dialog.hasAttribute('closing')).to.equal(false)
+      expect(dialog.hasAttribute('open')).to.equal(true)
+    })
+
+    it('does not close the slideover when text is selected', async () => {
+      const dialog = document.querySelector('dialog')
+      const openSlideoverButton = document.querySelector("[data-action='slideover#open']")
+      openSlideoverButton.click()
+      expect(dialog.hasAttribute('open')).to.equal(true)
+
+      // Simulate text selection
+      const selection = window.getSelection()
+      const input = document.querySelector("[data-testid='slideover-input']")
+      input.select()
+
+      // Simulate clicking on the backdrop while text is selected
+      const clickEvent = new MouseEvent('click', { bubbles: true })
+      Object.defineProperty(clickEvent, 'target', { value: dialog })
+      dialog.dispatchEvent(clickEvent)
+
+      // Modal should stay open because text is selected
+      expect(dialog.hasAttribute('closing')).to.equal(false)
+      expect(dialog.hasAttribute('open')).to.equal(true)
+
+      // Clear selection
+      selection.removeAllRanges()
     })
   })
 })