Thanks for the report. It stays "loading" forever because there's no such page - the address should be lowercase "/tag/privacidade", not uppercase Privacidade. It's probably our own fault - we should a) treat lower and upper-case tag names as equivalent, and b) make addresses lowercase when we pre-populate your navigation with popular tags.

The reason for 404 is technical - that's how our server handles non-found pages - it redirects to a special address which asks client-side code to run in the browser to try to find that page on nostr relays. That's why you see "loading" spinner there. What's missing is spinner becoming "Sorry page not found" page after the engine failed to find the content. 

Will fix all this.  

 Thanks nostr:nprofile1qqsrx4k7vxeev3unrn5ty9qt9w4cxlsgzrqw752mh6fduqjgqs9chhgppemhxue69uhkummn9ekx7mp0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qg6waehxw309aex2mrp0yh8x6rfw3nx7unrv5hx7mn99uslkdah! And thanks nostr:nprofile1qqsxrxhk5c9nlex8xw4v5psu2gkvn370rkr77nys37kvtmvnd5aa7gcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz9nhwden5te0dp5hxapwdehhxarj9ekxzmny9uq3wamnwvaz7tmjv4kxz7fwwpexjmtpdshxuet59uy7fr2d for the heads up :)