Hmm, that happened to me, too. And dunes inside craters blocked the view for me on at least one more occasion in Kaiser Crater.
I simply drove a rover to that site and finished the job. I thought the tricky placement of the marks was intended for it might be a nice feature when the user later will be able to steer and land manually.

Well, I have just found the Beagle Lander but have not yet returned with a DRT to scan it, but I can confirm that I only see a few disk-shaped parts (solar panels?) and one other small part that you can see on the attached image "2013-08-15_00004.jpg". There is nothing that looks like a spacecraft main body.

I just tried again with 0.8.0174 but still no Beagle. Only its solar panels and that one piece of debris.
For some reason I do not seem to be able to take screenshots via steam...