Why does Skype invert the image from my front camera?

I'm using the latest build of Windows 10 (version 1703) and I just downloaded Skype on my Lenovo Miix tablet/laptop PC. When I use the camera App, both the front and rear cameras work as expected with upright images. However, when I run Skype and go into settings and enable Test Video, the front camera shows an inverted image, but the rear camera continues to work as expected with an upright image. A left/right swap would not be too bad, but inversion is definitely ridiculously bad.

Obviously I'm reluctant to use the forward camera - the one for face to face Skype conversations - if the I will appear upside down on my contacts screen. Why does Skype invert the forward camera image and how do I fix it?

Added (1). Correction: "if the I will appear upside down on my contacts screen" should have said "if I will appear upside down on my contact's screen".

Because Skype is now owned by Microsoft, and they like messing around with things and not fully debugging their software.

You wrote: "if the I will appear upside down on my contacts screen."

Why did you add the word "the" in that sentence?