Missing control buttons on window borders for some windows.

[NoXPhasma]

• Distribution (with version): Linux Mint 18 x64
  • Base distribution (if have, with version): Ubuntu 16.04
• Desktop environment (with version): Mate 1.14 | Cinnamon 3.0.7
• Arc version/commit (don't put "latest"): commit e250405
• GTK+ 3 version: 3.18
  • Murrine engine version: 0.98.2
  • gnome-themes-standard version: 3.18
• Installation method (package or source): source | PPA package

Arc doesn't draw window controls on window borders for some windows, while other gtk3 themes do. It's enough to change the border theme to see buttons. This happens with all 3 Arc themes (Arc, Arc -Darker, Arc-Dark).

Screenshots (Arc Dark and Mint-Y-Dark):

[NoXPhasma]

I used the PPA package before which has the same problem. So I went to install it directly by source to look if it's already fixed. Sorry I should have mentioned that in the first post.