Dynamically changing app icons NOT working on Ticket Editor location

Hello,

According to the documentation it is possible to dynamically change the app icon the location "ticket_editor".

I have followed the documentation:

• Using file name icon_ticket_editor.svg
• I used the correct format for the svg

<svg xmlns="http://www.w3.org/2000/svg">  <symbol id="default" viewBox="0 0 18 18">    <circle cx="9" cy="9" r="5"/>  </symbol>
  <symbol id="mySymbol" viewBox="0 0 18 18">    <path d="M0 0h9v3H0zM0 7h18v3H0zM0 14h18v3H0zM15 3l3-3h-6"/>  </symbol></svg>

And it does not work. The icon is not displayed and if I try to use the function

client.set('iconSymbol', 'mySymbol')

I get the error:

client.js:160 Uncaught (in promise) APIUnavailable: Could not find handler for: "iconSymbol"

Probably this function is no longer supported and the docs are outdated, but if there was a solution that'd be amazing.

I also tried in the app to test "client.set('iconSymbol', 'mySymbol')" in location "top_bar" and it is working without any issue, so I think it is not my fault.