`ignoreFiles` also applied to `assetDir`?

Is this intended?

i have some css files included in my page bundle, to prevent hugo from copy it to public folder is by using ignoreFiles. But now, my css in assetDir won’t update to the latest modification when modified. Because it’s ignored by hugo.

the workaround is by renaming the css in my page bundle into filename.style.css
i can ignore it using \\.style\\.css$ so css in assets will work.