UI cut on Windows 7

[Bellisario]

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I have searched the issue tracker for an issue that matches the one I want to file, without success.

Component

App windows

Describe the bug
On Windows 7, the app is not properly shown: the up part is cut and can be difficult to use it. If it is in all-screen mode, the problem doesn't resolves and the close, reduce and all-screen enable/disable buttons of Windows are cut, too.

To Reproduce
Steps to reproduce the behavior:
Just open the app on Windows 7.

Expected behavior
The app need to don't cut parts of the UI and a part of button described up.

Screenshots

System Information (please complete the following information):

• OS: Windows
• Version: 7

Dot Browser Information (please complete the following information):

• Version: Nightly v87.0 - 2021-07-22 (87.0-2021-07-22)
• Site you were on before the bug appeared: Not relevant, problem is in all opened pages and all sites.

Additional context
None.

[kierandrewett]

Issue already reported, #84. Closing.