diff --git a/CHANGELOG.md b/CHANGELOG.md
index 76821281..a3c55f02 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - Added Dutch translations. ([#603](https://github.com/craftcms/ckeditor/pull/603))
 - Improved Norwegian translations. ([#601](https://github.com/craftcms/ckeditor/pull/601), [#602](https://github.com/craftcms/ckeditor/pull/602))
 - Fixed a bug where selected image transforms were being forgotten, if the transform chanegd the file format. ([#588](https://github.com/craftcms/ckeditor/issues/588))
+- Fixed a bug where downloadable links’ `download` attributes were sometimes getting set to the value `"true"`. ([#606](https://github.com/craftcms/ckeditor/issues/606))
 
 ## 5.6.1 - 2026-05-13
 
diff --git a/src/web/assets/ckeditor/dist/ckeditor5-craftcms.js b/src/web/assets/ckeditor/dist/ckeditor5-craftcms.js
index 8e8418e0..2d32e861 100644
--- a/src/web/assets/ckeditor/dist/ckeditor5-craftcms.js
+++ b/src/web/assets/ckeditor/dist/ckeditor5-craftcms.js
@@ -1340,7 +1340,9 @@ class Uu extends $n {
               for (const h of C)
                 i[d.model] ? f.setAttribute(
                   d.model,
-                  i[d.model],
+                  // for bool type options, if the value is set to true, set the attribute with empty value
+                  // see https://github.com/craftcms/ckeditor/issues/606 for more info
+                  d.type == "bool" && d.value == !0 ? "" : i[d.model],
                   h
                 ) : f.removeAttribute(d.model, h);
             }
diff --git a/src/web/assets/ckeditor/src/link/linkediting.js b/src/web/assets/ckeditor/src/link/linkediting.js
index 71b4ccd0..d18d0a10 100644
--- a/src/web/assets/ckeditor/src/link/linkediting.js
+++ b/src/web/assets/ckeditor/src/link/linkediting.js
@@ -124,6 +124,8 @@ export default class CraftLinkEditing extends Plugin {
                 writer.removeAttribute(item.model, writer.createRangeOn(node));
               }
             } else {
+              // one case where selection is considered not collapsed is when you highlight a text, add a link to it,
+              // and then click on the "edit link" icon without closing the balloon that you see after adding a link
               const ranges = editor.model.schema.getValidRanges(
                 selection.getRanges(),
                 item.model,
@@ -133,7 +135,11 @@ export default class CraftLinkEditing extends Plugin {
                 if (extraAttributeValues[item.model]) {
                   writer.setAttribute(
                     item.model,
-                    extraAttributeValues[item.model],
+                    // for bool type options, if the value is set to true, set the attribute with empty value
+                    // see https://github.com/craftcms/ckeditor/issues/606 for more info
+                    item.type == 'bool' && item.value == true
+                      ? ''
+                      : extraAttributeValues[item.model],
                     range,
                   );
                 } else {