Transparent border around maximized window

[henrysky]

<p><strong>Reproduction steps:</strong></p>
<p>Open Reports or Notification Setting or Network Activity or Application Activity etc</p>
<p>Click "Maximize" button on the top right to maximize window</p>
<p><span></span></p>
<p><strong>Actual result:</strong></p>
<p>Transparent border around those windows</p>
<p><span><img src="https://ibb.co/P1NFNW4" alt="" /><img src="https://i.ibb.co/9yNcN42/Screenshot-2022-03-06-110859.png" alt="" width="838" height="464" /><img src="/category/488/https:/i.ibb.co/p4xbxKZ/Screenshot-2022-03-06-110859.png" alt="" /><img src="/category/488/<a href="https:/ibb.co/P1NFNW4"><img src="https:/i.ibb.co/p4xbxKZ/Screenshot-2022-03-06-110859.png" alt="Screenshot-2022-03-06-110859" border="0" /></a>" alt="" /></span></p>
<p><strong>Expected Result:</strong></p>
<p>No transparent border around the windows</p>

[Jarvis]

Hello!
developers said it's same like https://eap.kaspersky.com/topic/3992
I've added your screen to that bug