The Tailwindcss V4 update with Angular 19 fails

[rudyhadoux]

Command

update

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

I upgrade to v4 but a lot of errors like this
✘ [ERROR] Cannot apply unknown utility class: py-0.5 [plugin angular-sass]

node_modules/tailwindcss/dist/lib.js:17:296:
17 │ ...r,{onInvalidCandidate:x=>{throw new Error(`Cannot apply unknown...
╵ ^

at onInvalidCandidate

Minimal Reproduction

https://tailwindcss.com/docs/installation/using-postcss

Exception or Error

Your Environment

19.1

Anything else relevant?

No response

[JeanMeche]

This is already being tracked by #28938

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