[–] Spank_My_Bottom [S] ago
When you are posting something to NSFW subverse, it should show up as NSFW by default. There is no external button to push to mark "NSFW" on a submission, only on a subverse setting. I am really not sure what causes the behaviour in Voat, but I do not have the power over it. If Voat's code is not working correctly, you should complain by the relevant people- people who can help. That is pretty much @puttitout and @atko.
[–] SaneGoatiSwear 0 points 1 point 1 point (+1|-0) ago
not tagged example: https://voat.co/v/CasualNudity/comments/953153
tagged example: https://voat.co/v/Amateurs/comments/953137
[–] Spank_My_Bottom [S] 0 points 1 point 1 point (+1|-0) ago
Both were tagged via subverse static. Why it is not working, you will have to ask @Puttitout