How to auto-focus an element in a tab after clicking the menu on SidePanel

[DevHero]

Hello

I will make a Chrome extension for auto filling text into textarea.
using chrome.scripting.executeScript()

After clicking the menu in SidePanel, the cursor cannot focus back into an element in the tab.

document.activeElement.focus() , it's not working.

How to switching autofocus between  Tab and SidePanel ?

thank you.
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