Back button doesn't work

[rt16]

When ever i type something and click on the device back button the back button does not work.If the text editor does not have focus and then i click on the back button it works fine.

I have the following code:
Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
HtmlEditor(
showBottomToolbar: false,
hint: "Your text here...",
//value: "text content initial, if any",
key: keyEditor,
height: 400,
),
],
),

[aravind816]

Yes....
The keyboard is not closing when clicked on/off focus in the text editor or by pressing the back button.
I have to focus on another field to get back the control of the keyboard.

I am getting the below error as well in the console.

E/InputMethodManager(16084): b/117267690: Failed to get fallback IMM with expected displayId=31 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{12ce443 VFEDHVC.. ........ 0,0-716,792}

W/cr_media(16084): Requires BLUETOOTH permission

E/InputMethodManager(16084): b/117267690: Failed to get fallback IMM with expected displayId=31 actual IMM#displayId=0 view=io.flutter.plugins.webviewflutter.InputAwareWebView{12ce443 VFEDHVC.. .F...... 0,0-71