[2021] How to opt out of ship viewer test? I just want vanilla 3.0.3

I have never heard of this test you mention, I am sorry. You have not opted into any beta in the Steam Betas tab for this game?  

I see, I did not know about that.

Only the devs can change that, so i suggest you post in that thread about the issues it causes. I agree it seems wrong to not have it as an opt-in .

Sorry about that!