DOC-3151: If style_formats is empty the button is now disabled.

Author: kemister85

modules/ROOT/pages/7.9.0-release-notes.adoc

@@ -157,7 +157,12 @@ For information on using Enhanced Skins & Icon Packs, see: xref:enhanced-skins-a
 // #TINY-vwxyz1
 
 // CCFR here.
+=== If `style_formats` is empty the button is now disabled.
+// #TINY-12005
 
+Previously, when the xref:user-formatting-options.adoc#style_formats[style_formats] configuration was empty or undefined, the **Formats** toolbar button remained active, resulting in a dropdown menu that appeared empty and non-functional. This behavior caused confusion, as users were presented with an unresponsive interface element that suggested available formatting options when none existed.
+
+In {release-version}, the {productname} editor now disables the **Formats** button entirely when no style formats are defined. This change improves usability by clearly signaling that there are no available style options, preventing unnecessary interaction and enhancing clarity for end users.
 
 [[security-fixes]]
 == Security fixes