Add a support note for issue 1909 regarding cycle to browser

Author: tombrunet

_rules/focusable-no-keyboard-trap-non-standard-nav-ebe86a.md

@@ -48,7 +48,7 @@ For each target element focus can cycle to the browser UI by using the method ad
 
 ## Accessibility Support
 
-There are no accessibility support issues known.
+Some browsers have settings that will immediately cycle focus back to the web document. This fulfills the expectation because focus can cycle to the browser UI and the browser UI cycles focus back to the web document.
 
 ## Background
 

_rules/focusable-no-keyboard-trap-standard-nav-a1b64e.md

@@ -17,6 +17,7 @@ acknowledgments:
     - Malin Øvrebø
     - Shadi Abou-Zahra
     - Stein Erik Skotkjerra
+    - Tom Brunet
   funding:
     - WAI-Tools
 ---
@@ -38,7 +39,7 @@ For each target element, focus can cycle to the browser UI by using [standard ke
 
 ## Accessibility Support
 
-There are no accessibility support issues known.
+Some browsers have settings that will immediately cycle focus back to the web document. This fulfills the expectation because focus can cycle to the browser UI and the browser UI cycles focus back to the web document.
 
 ## Background