DOC-3340: TinyMCE 8.3.2 Release Documentation and Community changelog. (#3959)

* DOC-3340: TinyMCE 8.3.2 Release Documentation and Community changelog.

* DOC-3340: Placeholder loading had two progress indicators. (#3960)

* DOC-3340: `uc-video` elements are not refreshed on undo/redo actions. (#3961)

* DOC-3340: uc-video elements are not refreshed on undo/redo actions.

* DOC-3340: fix syntax issue.

* DOC-3340: copy edits and cleanup.

* DOC-3340: bump api-version to 8.3.2.

Author: kemister85

.api-version

@@ -1 +1 @@
-8.3.1
+8.3.2

modules/ROOT/nav.adoc

@@ -387,7 +387,7 @@
 *** {productname} 8.3.2
 **** xref:8.3.2-release-notes.adoc#overview[Overview]
 **** xref:8.3.2-release-notes.adoc#accompanying-premium-plugin-changes[Accompanying Premium Plugin changes]
-**** xref:8.3.2-release-notes.adoc#bug-fixes[Bug fix]
+**** xref:8.3.2-release-notes.adoc#improvement[Improvement]
 *** {productname} 8.3.1
 **** xref:8.3.1-release-notes.adoc#overview[Overview]
 **** xref:8.3.1-release-notes.adoc#accompanying-premium-plugin-changes[Accompanying Premium Plugin changes]

modules/ROOT/pages/8.3.2-release-notes.adoc

@@ -14,33 +14,34 @@ include::partial$misc/admon-releasenotes-for-stable.adoc[]
 {productname} {release-version} was released for {enterpriseversion} and {cloudname} on Wednesday, January 14^th^, 2026. These release notes provide an overview of the changes for {productname} {release-version}, including:
 
 * xref:accompanying-premium-plugin-changes[Accompanying Premium plugin changes]
-* xref:bug-fixes[Bug fix]
+* xref:improvement[Improvement]
 
 
 [[accompanying-premium-plugin-changes]]
 == Accompanying Premium plugin changes
 
 The following premium plugin updates were released alongside {productname} {release-version}.
 
-=== <Premium plugin name 1> <Premium plugin name 1 version>
+=== Media Optimizer
 
-The {productname} {release-version} release includes an accompanying release of the **<Premium plugin name 1>** premium plugin.
+The {productname} {release-version} release includes an accompanying release of the **Media Optimizer** premium plugin.
 
-**<Premium plugin name 1>** <Premium plugin name 1 version> includes the following <fixes, changes, improvements>.
+**Media Optimizer** includes the following fix.
 
-==== <Premium plugin name 1 change 1>
+=== Placeholder loading had two progress indicators
+// #TINY-13163
 
-// CCFR here.
+Uploading a video in {productname} could display two progress indicators at the same time (a spinner and a progress bar), which unnecessarily cluttered the UI and made upload status harder to interpret. In {release-version}, the upload experience was updated to display only a single progress indicator: a progress bar when the upload duration can be estimated, or a spinner when the remaining time is unknown, resulting in a cleaner and clearer interface during video uploads.
 
-For information on the **<Premium plugin name 1>** plugin, see: xref:<plugincode>.adoc[<Premium plugin name 1>].
+For information on the **Media Optimizer** plugin, see: xref:uploadcare.adoc[Media Optimizer].
 
 
-[[bug-fixes]]
-== Bug fix
+[[improvements]]
+== Improvements
 
-{productname} {release-version} also includes the following bug fix:
+{productname} {release-version} also includes the following improvement:
 
-=== <TINY-vwxyz 1 changelog entry>
-// #TINY-vwxyz1
+=== `uc-video` elements are not refreshed on undo/redo actions
+// #TINY-12884
 
-// CCFR here.
+Previously, undo and redo operations rewrote the entire editor content, causing embedded `uc-video` elements to be rewritten and unintentionally refreshed, which disrupted playback and user experience. This behavior affected any content containing `uc-video`, as media elements were reloaded even when unrelated changes were undone or redone. The undo/redo mechanism has been updated to align with the existing iframe handling logic so that, when `uc-video` elements are present, only the modified portion of the content is refreshed rather than the full editor content. As a result, `uc-video` elements now remain stable and are no longer refreshed during undo or redo actions in {productname} {release-version}.

modules/ROOT/pages/changelog.adoc

@@ -6,7 +6,8 @@ NOTE: This is the {productname} Community version changelog. For information abo
 
 == xref:8.3.2-release-notes.adoc[8.3.2 - 2026-01-14]
 
-//TODO
+* `uc-video` elements are not refreshed on undo/redo actions.
+// #TINY-12884
 
 == xref:8.3.1-release-notes.adoc[8.3.1 - 2025-12-17]