Breaking: #80374 - Default content element configuration for frontend login adapts fluid styled content

See Issue #80374

Description

Default configuration for the frontend login content element was adapted to match fluid styled content instead of css styled content by default. Css styled content was adapted and works there as before.

Rendering for css styled content

tt_content.login = COA
tt_content.login {
   10 =< lib.stdheader
   20 =< plugin.tx_felogin_pi1
}

Rendering for fluid styled content

tt_content.login =< lib.contentElement
tt_content.login {
   templateName = Generic
   variables {
      content =< plugin.tx_felogin_pi1
   }
}

Impact

Adjustments made manually to the TypoScript rendering definition of tt_content.login might not work in fluid styled content as expected.

Affected Installations

Installations that are using fluid styled content and directly modify configuration of tt_content.login.

Migration

Manual adaption is necessary.