Vanilla frontend don't style HTML formatted posts

[Aldarone]

Steps to reproduce the problem

1. Write a toot in markdown

2. Open it on your instance with a Glitch Edition Theme (eldritch.cafe)
   

3. Open it on your instance with a Vanilla Edition Theme (eldritch.cafe)
   

4. Open it on a Vanilla instance (piaille.fr)
   

Expected behaviour

The toot should look similar on Vanilla instance and on Glitch-soc with a vanilla theme (I tried every Vanilla theme available on my instance, I usually use Tangerine UI)

Actual behaviour

There is no styling of the extra HTML tags (but the markup seems preserved)

Mastodon instance

eldritch.cafe

Mastodon version

v4.3.2+glitch

Browser name and version

Vivaldi 7.0.3495.29 (Stable channel) (64 bits)

Operating system

Windows 10 / Linux Mint

[ClearlyClaire]

I think what happens is upstream transforms the <h1>, <h2>,.. tags to <p><strong>…</strong></p>, for which it has styling.

Glitch-soc, on the other hand, keeps those header tags as-is, but then does not have appropriate styling for them when using the vanilla flavor.

This is a bit awkward, because we want to avoid adding custom code (including styles) to the vanilla flavor, but since we accept more HTML tags, we're lacking specific styling for them.

[Aldarone]

So maybe we ask @nileane (and other theme developpers) if she's willing to make a glitch version of TangerineUI with styling for the unfiltered tags ?