The # sign (number sign/hash) appears in the z-index after build assets

[ahmadertarizqi]

Hi,
I have a problem after build assets, that is # (hash) appears in the z-index property css. I'm using SASS, postcss-loader, and autoprefixer

and the result looks like this:

This happens only during build production

[stof]

without a reproducer, there is nothing we can do to help

[Kocal]

Looks like the same as #984, no ?

[stof]

This indeed looks like a duplicate. And the issue has already been fixed in cssnano so running yarn upgrade should fix your issue

[ahmadertarizqi]

Yes, this issue is the same as #984 .
Thanks @Kocal and @stof for helping.