Changing screen orientation messes fence

Hello,

Thanks for a great software, I used it all the time.

But I recently changed my monitor to Benq GW2765HT,

It can pivot and I use it very often.

But everytime I change orientation 90 deg and back 

Fences location and size goes haywire. 

Especially it does not look good when they overlap each other.

I have to constantly relocate and change size of the fence everytime I change screen orientation.

Currently I am not using fence because of this.

Can you kindly fix this please?

Many thanks in advance