UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36

Steps to reproduce the problem:
Every time

What is the expected behavior?
The buttons on titlebar are correct

What went wrong?
When I use GTK+ Theme without system title bar and border (CSD), the buttons minimize, maximize and close are cutted in both sides. This problem is only in KDE. GTK+ desktop environment haven't this UI problem.

Did this work before? No 

Chrome version: 64.0.3282.167  Channel: stable
OS Version: 4.14
Flash Version: 23
 

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