Breaking: #77592 - Dropped TCA option showIfRTE in type=check¶
See Issue #77592
The TCA setting
showIfRTE for type=check is not evaluated anymore and has been removed from the TCA on all fields.
All TCA columns having this option set will be shown at any time inside FormEngine. The option has been removed from the final TCA used inside TYPO3.
The TCA migration will throw a deprecation message when building the final TCA.
TYPO3 instances using old extensions which provide custom TCA configurations having this option set.
Remove the setting from the TCA, and if still needed, use a custom display condition to achieve the same functionality.