TYPO3 Core

Overwriting flexform values for tt_content in page TSConfig works fine when generating the form, but when TCEMain saves the record the flexform is read again but not overwritten by TSConfig. This gives issues when changing the eval config of a field in flexform. Because in the form it works like expected, but when saving an unexpected value is stored.

Example:

TCEFORM {
    tt_content {
        pi_flexform {
            table {
                sDEF {
                    acctables_tableclass {
                        config {
                            default = table table-bordered
                            eval = trim
                        }
                    }
                }
            }
        }
    }
}

Allows multiple classes in the form, but when saving the original eval value "nospace,trim,alphanum_x" (typo3/sysext/css_styled_content/flexform_ds.xml:88) is used and removes the space and other things..