Bug: Wiki v2 (new Reddit) doesn't render Markdown for content written via reddit.updateWikiPage(), identical content renders fine under v1

[u/vanessabaxton]

EDIT

Turns out it works with HTML in the new wiki, however there's still a bug where you can't copy the text when in edit mode, but that's a reddit bug not a devvit one, so problem solved.

---

Devvit version: @devvit/public-api ^0.14.0 (Node 24 runtime)

What I did

Wrote the exact same Markdown content to the same wiki page path under both wiki versions, using reddit.updateWikiPage() / reddit.createWikiPage() with wikiVersion: "v1" and wikiVersion: "v2" respectively:

# Content

From this week's megathread: https://www.reddit.com/r/subreddit/comments/id/

22 question(s) with no replies:

- https://www.reddit.com/r/subreddit/comments/id/subject/id2/ - https://www.reddit.com/r/subreddit/comments/id3/subject/id4/ ...

Expected

Both versions render the # heading and - bullet list as Markdown, same as if a human had typed this into the wiki editor directly.

Actual

v1 (viewed on old.reddit.com): renders correctly, real h1 heading, real bullet list, each URL auto-linked.

v2 (viewed on new Reddit / www.reddit.com): renders as one flat block of plain text. The # and - markers show up as literal characters, not parsed as Markdown, and the URLs aren't auto-linked. Same content, same write call shape, just wikiVersion swapped:

- old Reddit (v1): proper heading + bullet list + clickable links - new Reddit (v2): "# Unanswered Questions From this week's Questions megathread: ... 22 question(s) with no replies: - https://... - https://..." all run together as unformatted text

Additionally, in the new-Reddit wiki edit mode for the v2 page, the content in the textarea doesn't behave like normal selectable/copyable text, I can't select-and-copy it out of the edit box the way I can on the old.reddit.com editor for the same page.

Impact

Any app that writes structured wiki content (headings, lists, links) via the Devvit API and targets wikiVersion: "v2" gets unusable, unformatted output on new Reddit, even though the identical content is correctly rendered under v1. This makes v2 wiki pages effectively unusable for anything beyond a single unformatted paragraph until this is fixed, and undermines the migration guidance to move apps onto v2.

Repro

1. Call reddit.updateWikiPage({ subredditName, page, content: "# Heading\n\n- item one\n- item two", wikiVersion: "v2" }) on a v2-enrolled subreddit. 2. View the page at www.reddit.com/r/<sub>/wiki/<page>. 3. Compare against the same call with wikiVersion: "v1", viewed at old.reddit.com/r/<sub>/wiki/<page>.

[u/fsv]

My understanding (not played with it yet) is that the new wiki doesn't work using Markdown, but HTML. I'd create a page manually using the UI, retrieve it using Devvit, and then check the output.

There are converters from Markdown to HTML which I would be looking to use once I start adding New Wiki support to my apps.

[u/vanessabaxton → u/fsv]

You're absolutely right, thank you so much! It works with HTML, however there's still the bug where you can't copy the wiki page while in edit mod, but that's a reddit bug not a devvit issue so I'll probably delete this post, thank you again!