input cannot focus when switching webview

[roguexiaohuihui]

Issue Type: Bug
I created a webview with just an input tag in it, and I just asked input.focus()

1、The first time you open the webview you can focus properly

2、Switch to another document or webview

3、So let's go back to the first step, the webview，the focus is gone，just click the mouse down the webview and the focus will work

VS Code version: Code 1.39.0
OS version: Windows10

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Does not restore webview focus when switching back to VS Code window (#72525)
• Support WebViews in extension contributed custom views (#83911)
• Command Palette should steal focus from active webview... (#62403)
• ctrl+w is closing 2 editors when custom webview editor image preview is focused (#81771)
• Try better webview focus tracking solution in Electron 6+ (#65413)

[mjbvz]

I can't repo in the current insiders builds (1.41). Please share the example extension

[roguexiaohuihui]

I can't repo in the current insiders builds (1.41). Please share the example extension

I created a simple demo, modified with webview official instance, please help to look at this problem：
https://github.com/roguexiaohuihui/input-focus

[roguexiaohuihui]

when switching webview, the plug-in transmits a signal to webview through message and actively asks the input of webview to focus again. Instead of the input being focused after the mouse click on the screen

[roguexiaohuihui]

@mjbvz I hope you can take a look at this problem when you are free