Angular ng build prod convert all percent opacity to 1%

[ybarbaria]

🐞 bug report

Affected Package

The issue is caused by the cssnano package
related to cssnano/cssnano#881

Is this a regression?

I don't know I never used percent for opacity since today.

Description

I have some class where I defined some opacity by percent like this one :

After using the ng build --prod my style become :

🌍 Your Environment

Angular Version:

Angular CLI: 9.1.1
Node: 12.14.1
OS: win32 x64

Angular: 9.1.2
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router, service-worker
Ivy Workspace: Yes

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.901.1
@angular-devkit/build-angular     0.901.1
@angular-devkit/build-optimizer   0.901.1
@angular-devkit/build-webpack     0.901.1
@angular-devkit/core              9.1.1
@angular-devkit/schematics        9.1.1
@angular/cdk                      9.1.0
@angular/cli                      9.1.1
@angular/flex-layout              9.0.0-beta.29
@angular/material                 9.1.0
@ngtools/webpack                  9.1.1
@schematics/angular               9.1.1
@schematics/update                0.901.1
rxjs                              6.5.4
typescript                        3.7.5
webpack                           4.42.0

[alan-agius4]

Hi @ybarbaria,

As per the linked issue above this is a CSSNano bug, while the fix was merged it was not released.

Once there is a CSSNano release we'll update the package version used in the CLI. Until then, this is not actionable from our end.

Thank you.

[ybarbaria]

Hi @alan-agius4 , thanks for your feedback, I thought they already release the fix my bad sorry !

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