Windows 10: Volume bar on top left corner of the screen not working properly

I always use the fn buttons to regulate the volume and when I press them, the bar appears in the corner of the screen, of course.But I've noticed today I don't know for how many days this has been happening though that when i press the buttons and regulate my volume, I can hear it changing normally but the bar in the corner doesn't go up with the numbers nor down and doesn't show the ''X'' when i mute the volume. Regulating the volume directly from the bar doesn't work as well: I can drag it down and up but the volume I hear doesn't change at all. I already tried to run the troubl

:)

 

Annoying audio popup in top left corner of screen for Audible

The Bar is a Media Transport within Windows,
all kinds of apps use it...
(some well, some not so well!!!) *Wink

 

Volume and brightness bar on top left of screen missing

Normally, whenever I adjust the brightness or volume on my laptop, a bar indicating the volume or brightness level appears in the top left. Just today the bar in the top left no longer appears when adjusting volume or brightness. Can someone pls help so
that the bar appears again when i adjust volume or brightness?

 

Windows 10 volume bar on top left is huge

Can someone please explain how this window went from a little one with just the volume level, to this thing that takes up half the screen.