This is my last effort to find a fix for this before I find a different client to use. So far I have:
• Made sure hide NSFW posts is enabled on the web client
• Made sure hide NSFW posts is enabled in voyager
• Signed out and back in on voyager
• Signed out and back in on web client.
Voyager’s piefed support is a little spotty. Blocks and filters often don’t work if you’re using a piefed account. Try setting up a lemmy or mbin account and see if the problem persists. I bet it isn’t voyager. It happens to me all the time on my account but i just don’t mind if i see NSFW sometimes.