css parsing is merging two unrelated flex class selectors in one

[triptu]

What version of Bun is running?

1.1.45+196621f25

What platform is your computer?

Darwin 24.1.0 arm64 arm

What steps can reproduce the bug?

This is regarding bundling with index.html file as entry point. Create a styles.css with below content which is linked in index.html.

.flexrow {
	flex-direction: row;
}

.flexcol {
	flex-direction: column;
}

.hello {
	flex-wrap: wrap;
}

.world {
	flex-wrap: nowrap;
}

Run build -

bun build ./index.html --outdir=dist --experimental-html --experimental-css

What is the expected behavior?

The generated build file should have the same css as defined.

What do you see instead?

The generated style file in the dist folder has the below content which is not correct.

.flexrow, .flexcol {
  flex-direction: row;
}

.hello, .world {
  flex-wrap: wrap;
}

Additional information

No response