Rated 5 out of 5 stars

Now when i use Htitle with Gnome theme 34.1 (and gnome theme tweak extension 34.1) , windows control disappears

Firefox 34
Fedora 21 32 bits
Debian testing 64 bits

Edit : i use gnome 3.14 with Fedora 21 and Debian testing.
htitle with gnome theme 34.1 is working on ubuntu 14.04 with gnome 3.10.

Thank you.

This review is for a previous version of the add-on (2.13.1-signed.1-signed). 

What is yours GNOME version?

With 3.14 you _MUST_ use the latest beta version of HTitle (3.2b3), because GNOME's developers changed the key what used for store window's buttons layout.

Rated 4 out of 5 stars

is enabled with show window controls : when a window is half-maximized there's no window controls.

This review is for a previous version of the add-on (2.13.1-signed.1-signed). 

It isn't bug actually. GTK2 just doesn't provide needed things that can be used for detection this state of the window.

Rated 4 out of 5 stars

when hide titlebar is enabled

Edit : thanks for your return, i've enabled the gnome 3 theme to work with Htitle.

This review is for a previous version of the add-on (2.13.1-signed.1-signed). 

You should use a theme for this.