Please describe the problem:
This bug has been reported here:
https://bugs.launchpad.net/ubuntu/+source/totem/+bug/291519

I play a video and set the totem volume control to maximum then I click again to the volume control to reset it to another value but the volume drop down automatically to a lower value. Then every time I click on it, the totem volume resets automatically to a lower value.

I discovered that there are two issues related to this: one that happens when I set totem volume to maximum (1) and the other when I set the totem volume to a value lower (2) than maximum.
In the case (1) the issue happens only when I move totem player to the bottom of my desktop in a way that its volume control, once clicked on opened, go above the gnome apps bar: so the volume control is always resetted to a lower value. The same issue happens if I totally maximize totem player window: in fact in this way the totem volume control always goes up the gnome apps bar.
In the case (2) the issue is always present but it'is almost "invisible": in fact every time I click on the totem volume control and I do nothing (that is, after clicking on it I click on another point of totem window in order to close the control) the volume is always lowered but just about 2% or 3%.

Steps to reproduce:
A)

1. open totem in window mode
2. set the totem volume to maximum
3. move the totem player to the bottom of the desktop in a way that its volume control, once clicked on opened, go above the gnome apps bar or maximize totem player window
4. click on the totem volume control 


B)

1. open totem in window mode
2. set the totem volume to a value lower than maximum
3. move the totem player to the bottom of the desktop in a way that its volume control, once clicked on opened, go above the gnome apps bar or maximize totem player window
4. click on the totem volume control and do nothing (that is, after clicking on it I click on another point of totem window in order to close the control)
 


Actual results:
Totem volume resets to a lower value

Expected results:
If doing nothing totem volume control should remain at previous value

Does this happen every time?
yes

Other information: