preview-head.html is not rendered again in hot reload

[caub]

steps

have a preview-head.html file at the root of storybook folder

insert <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet"> in it for testing

in your stories add a story with <span className="material-icons">close</span> in it, this renders a cross icon, when the fonts are loaded

It works in the main storybook page, and even for that story (&full=1) if you reload, the fonts works

but in development mode (I use "storybook": "start-storybook -p 9001 -c .storybook",) as soon as editing this particular story, it's re-rendered, and you see suddenly close instead of a ❌, I guess preview-head.html is ignored

version

"@storybook/react": "^3.3.14"

[caub]

for the reproduction, it's not really easy in a codesandbox or fiddle

you can reproduce with any storybook setup (having react, babel, .. all set up), add a preview-head.html containing <style>body {border: 2px red solid}</style> for example, run npx storybook, edit a story, save and observe the body styling disappears

here's a quick video: https://i.imgur.com/sR9KTQ6.gifv

@ndelangen do you need a standalone reproduction repo for this issue? then I'll try to make one from one of the examples

[caub]

I couldn't reproduce using examples/official-storybook (and its preview-head.html) I'll search more the issue, will make a simple standalone repo

[ndelangen]

thanks! Will take a look if you can provide a reproduction repo 👍 .

[caub]

Ok, I found the issue
https://github.com/caub/storybook-preview-head
I was using my main webpack config (because I needed special resolves) but that one were also using an html template, which was used after hot reload (hence the missing styling from preview-head.html)

I just need to avoid HtmlWebpackPlugin in storybook

It was more weird in my actual repo, since storybook templates was loaded initially as you can see in the video, and then the webpack template was loaded instead. In this repo, it's only loaded the webpack template, even if I tried to keep the env as much similar as possible

Thanks, closing, maybe there can be things, like warnings to add on storybook side in such a case