diff --git a/test/integration/reorganize_pages_spec.mjs b/test/integration/reorganize_pages_spec.mjs
index c50347c05..dfb2d764e 100644
--- a/test/integration/reorganize_pages_spec.mjs
+++ b/test/integration/reorganize_pages_spec.mjs
@@ -2819,4 +2819,93 @@ describe("Reorganize Pages View", () => {
       );
     });
   });
+
+  describe("New badge (bug 2026564)", () => {
+    let pages;
+
+    beforeEach(async () => {
+      pages = await loadAndWait(
+        "page_with_number.pdf",
+        "#viewsManagerToggleButton",
+        "page-fit",
+        null,
+        { enableSplitMerge: true, enableNewBadge: true }
+      );
+    });
+
+    afterEach(async () => {
+      await closePages(pages);
+    });
+
+    it("should hide the new badge when a page is selected and show it again when deselected", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await waitForThumbnailVisible(page, 1);
+
+          // The badge must be visible initially.
+          await page.waitForSelector(".newBadge", { visible: true });
+
+          // Select page 1 via its checkbox.
+          await waitAndClick(
+            page,
+            `.thumbnail:has(${getThumbnailSelector(1)}) input`
+          );
+
+          // The badge must be hidden after selection.
+          await page.waitForSelector(".newBadge", { hidden: true });
+
+          // Deselect page 1.
+          await waitAndClick(
+            page,
+            `.thumbnail:has(${getThumbnailSelector(1)}) input`
+          );
+
+          // The badge must be visible again after deselection.
+          await page.waitForSelector(".newBadge", { visible: true });
+        })
+      );
+    });
+
+    it("should hide the new badge when dragging an unselected page and restore it after", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await waitForThumbnailVisible(page, 1);
+
+          // The badge must be visible initially.
+          await page.waitForSelector(".newBadge", { visible: true });
+
+          // Watch for the badge being hidden during the drag.
+          const handleBadgeHidden = await createPromise(page, resolve => {
+            const observer = new MutationObserver(() => {
+              const badge = document.querySelector(".newBadge");
+              if (badge?.classList.contains("hidden")) {
+                observer.disconnect();
+                resolve();
+              }
+            });
+            observer.observe(document.querySelector(".newBadge"), {
+              attributes: true,
+              attributeFilter: ["class"],
+            });
+          });
+
+          const rect1 = await getRect(page, getThumbnailSelector(1));
+          const rect2 = await getRect(page, getThumbnailSelector(2));
+
+          await dragAndDrop(
+            page,
+            getThumbnailSelector(1),
+            [[0, rect2.y - rect1.y + rect2.height / 2]],
+            10
+          );
+
+          // The badge must have been hidden at some point during the drag.
+          await awaitPromise(handleBadgeHidden);
+
+          // The badge must be visible again after the drag ends.
+          await page.waitForSelector(".newBadge", { visible: true });
+        })
+      );
+    });
+  });
 });
diff --git a/web/app.js b/web/app.js
index fae7725f8..ed78bd41e 100644
--- a/web/app.js
+++ b/web/app.js
@@ -373,6 +373,7 @@ const PDFViewerApplication = {
         enableComment: x => x === "true",
         enableFakeMLManager: x => x === "true",
         enableGuessAltText: x => x === "true",
+        enableNewBadge: x => x === "true",
         enablePermissions: x => x === "true",
         enableSplitMerge: x => x === "true",
         enableUpdatedAddImage: x => x === "true",
diff --git a/web/pdf_thumbnail_viewer.js b/web/pdf_thumbnail_viewer.js
index f0113e470..0c5f03b89 100644
--- a/web/pdf_thumbnail_viewer.js
+++ b/web/pdf_thumbnail_viewer.js
@@ -161,6 +161,8 @@ class PDFThumbnailViewer {
 
   #hasUndoBarVisible = false;
 
+  #newBadge = null;
+
   /**
    * @param {PDFThumbnailViewerOptions} options
    */
@@ -216,6 +218,7 @@ class PDFThumbnailViewer {
         newSpan.setAttribute("data-l10n-id", "pdfjs-new-badge-content");
         newSpan.classList.add("newBadge");
         button.parentElement.before(newSpan);
+        this.#newBadge = newSpan;
       }
 
       this.eventBus.on(
@@ -601,6 +604,7 @@ class PDFThumbnailViewer {
       this.#currentScrollTop + this.scrollableContainer.clientHeight;
     this.#dragAC = new AbortController();
     this.container.classList.add("isDragging");
+    this.#newBadge?.classList.add("hidden");
     const startPageNumber = parseInt(
       draggedThumbnail.getAttribute("page-number"),
       10
@@ -658,6 +662,7 @@ class PDFThumbnailViewer {
     this.#dragMarker = null;
     this.#dragAC.abort();
     this.#dragAC = null;
+    this.#newBadge?.classList.remove("hidden");
 
     this.container.classList.remove("isDragging");
     for (const selected of this.#selectedPages) {
@@ -976,12 +981,14 @@ class PDFThumbnailViewer {
           : "pdfjs-views-manager-pages-status-none-action-label"
       );
       if (count) {
+        this.#newBadge?.classList.add("hidden");
         this.#statusLabel.setAttribute(
           "data-l10n-args",
           JSON.stringify({ count })
         );
         this.#deselectButton.classList.toggle("hidden", false);
       } else {
+        this.#newBadge?.classList.remove("hidden");
         this.#statusLabel.removeAttribute("data-l10n-args");
         this.#deselectButton.classList.toggle("hidden", true);
       }