Teststack unable to find some elements when run against 4.8 .net framework

[shirink28]

I upgraded my test solution to target framework 4.8 and also installed .net framework on my machine.
When i run the tests, teststack is no longer able to find few elements and throws element not found exception
Also the right click on tree nodes does not work and throws object reference not set to instance of object error.
Are we maintaining this?
Is teststack compatible only till 4.7.2 .net framework?

[denhaandrei]

See #671