There seems to be an issue when you post more then 2 urls in the same note. It won't render the preview.
Try posting two GitHub urls in the same note, it's not just GitHub. Seems to be all urls.
mar
npub1c7…8qh4c
2026-09-12 14:00:46 UTC
in reply to nevent1q…3ry6
Author Public Key
npub1c7k2hu076gq62vv9unw9urrt4c4utkce6uatlpq9xhestk8s2xqql8qh4cPublished at
2026-09-12 14:00:46 UTCEvent JSON
{
"id": "26b7c6534a8488ea43710fa13f534e59dd57d4cf9a6ec9faaebffa40f5efd7f3",
"pubkey": "c7acabf1fed201a53185e4dc5e0c6bae2bc5db19d73abf840535f305d8f05180",
"created_at": 1789221646,
"kind": 1,
"tags": [
[
"e",
"386bea77b8c34cafe76495a40fab9ff8cac0f241bc5a014233a21145fab4c282",
"wss://nostr.mom/",
"root",
"f27341f6cf1e7abdf894372246332f58fe79c9925d489fe597218017314adfd3"
],
[
"p",
"f27341f6cf1e7abdf894372246332f58fe79c9925d489fe597218017314adfd3",
"wss://nos.lol/"
],
[
"client",
"Amethyst"
]
],
"content": "There seems to be an issue when you post more then 2 urls in the same note. It won't render the preview. \n\nTry posting two GitHub urls in the same note, it's not just GitHub. Seems to be all urls.",
"sig": "3c8d67e91f708ece6e6a666c3e0a8cfd87728601e056e5cf7d810a5caaae6d95d17893d8153aa9a31b83751dfc6527aaf926a2e57c7d767f699518055c5c3942"
}