TYPO3 Core

According to the documentation https://docs.typo3.org/typo3cms/TyposcriptReference/Setup/Config/Index.html#concatenatecss it is expected that concatenation of CSS happens for all similar media:

How to reproduce¶

page.includeCSS {
    file1 = fileadmin/css/file1.css
    file2 = fileadmin/css/file2.css

    file3 = fileadmin/css/file3.css
    file3.media = screen

    file4 = fileadmin/css/file4.css
    file4.media = screen

    file5 = fileadmin/css/file5.css
    file5.media = print

    file6 = fileadmin/css/file6.css
    file6.media = print
}

Expected¶

• file1.css and file2.css are merged together, media="all"
• file3.css and file4.css are merged together, media="screen"
• file5.css and file6.css are merged together, media="print"

Actual¶

• file1.css and file2.css are merged together, media="all"
• All other files are included as-is, without concatenation