yeah, there's quite a few 1049x being distributed atm, posts over at FF indicate that the sweet point for folding these is on a 1070, a 1080 doesn't get the usual 800k PPD on these but still burns the same amount of electricity.
There is some info on project 13902 in the beta testing topic at the folding forum. Support for projects in "beta" is restricted to the beta testing topic, which is "read only" for non-beta team members.
Project 13902 https://foldingforum.org/viewtopic.php?f=66&t=29943
Project 13902 should not have been assigned to any clients NOT running the "beta" flag and is good example of why projects go through beta testing.
Please provide info on what GPU, ppd, OS, client version and client-type (flag) you were running. If there actually was an assignment error to a non-beta client, the project owner will need to be notified in the thread over at the folding forum.