Hello,
Sorry to hear you are having issues. As a test, if you apply Windows default theme, does the titlebar still appear? Remember to close the game first, apply Window default theme. Restart the game and see if the issue still there.

Thank you,
Basj,
Stardock Community Assistant.

With Windows default skin applied. Reboot the system and see if the same issue appear.

Thank you,

Basj,
Stardock Community Assistant

Hello,

You should be able to disable that frame from being skin by WB. This is done by setting "ApplicationFrameHost.exe" to be ignore/exclude by WB. Refer here for reference: https://forums.stardock.com/507885/ (reply#10)

Note this will set all Universal Application type application be ignore by Windowblinds.

Thank you,

Basj,

Stardock Community Assistant.