DOC-2270: add fix documentation for TINY-10570 to the TinyMCE 7.0 release notes. (#3133)

* DOC-2270: add fix documentation for TINY-10570 to the TinyMCE 7.0 release notes.

* DOC-2270: add space to seperate admon.

modules/ROOT/pages/7.0-release-notes.adoc

@@ -39,6 +39,7 @@ The following new Premium plugins were released alongside {productname} 7.0.
 The new Premium plugin, **Import from Word** provides a way to import `.docx` (Word documents) or `.dotx` (Word templates) files into the editor.
 
 include::partial$misc/admon-paid-addon-pricing.adoc[]
+
 For information on the **Import from Word Premium Plugin** see xref:importword.adoc[Import from Word docs].
 
 === Export to Word
@@ -322,6 +323,17 @@ As a result, users no longer experience unexpected list insertions.
 === <TINY-vwxyz 1 changelog entry>
 //#TINY-vwxyz1
 
+=== Floating toolbar buttons in inline editor incorrectly wrapped into multiple rows on window resizing or zooming.
+//# TINY-10570
+
+An issue was identified where the floating toolbar's functionality, specifically regarding the incorrect rendering of the overflow button on a second row when the window was resized or the browser was zoomed.
+
+Previously, when the toolbar contained more buttons than could be displayed within the available space, an overflow button (depicted by three dots) `...` would appear at the toolbar's end, enabling users to access the remaining buttons. However, due to a bug, this overflow button would occasionally shift to a second row, disrupting the layout, especially during window resizing.
+
+{productname} 7.0 addresses this issue, by adding improvements to the resizing behavior of the toolbar to ensure it consistently fits within one row.
+
+As a result, the toolbar now adjusts its size appropriately and maintains a single-row layout, effectively preventing the overflow button from erroneously moving to a second row under any circumstances.
+
 === Fixed incorrect object processor for `event_root` option.
 // #TINY-10433