zoon turns Smartphone camera automatically in Portrait

[roneu]

Hello, 
I use my Smartphone as a second camera to film things, that I am drawing on a paper. This worked fine in landscape mode, since the paper is in landscape. At least until last monday. Now zoom always turns the picture in portrait for the other participants, so I can still use landscape, but the others can nearly see nothing. 
You can see it there, this is a screenshot of the Smartphone view:

https://rn.next-cloud.org/index.php/s/ai9PfTAeCHepGeG

I took a picture of the MacBook and you can see, that the picture is turned....
Android and iOS...

Any ideas?

[ExpertswhoJohn]

HI @roneu ,

Zoom just takes what it is given by the phone. You can turn your phone from sideways to upright to change what goes to zoom.
Zoom can not mirror or flip the image to the audience. Mirror only works back to the user.
all the best

John

[roneu]

Well, that is not what I experience (and it changed the last days, with no change of configuration or update on my side.) On the phone I have a landscape view in landscape. 
On the computer (the other participant) this view is now rotated 90°. Did you have a look at the screenshot I provided?