TYPO3 Core

When there are multiple fields with htmlarea in the same content element, only the last RTE blockstyle and textstyle dropdowns get filled.

RTE fields other than the last do have select fields and they are not disabled, but there are no options to select.

Could reproduce on 7.3, could not reproduce on 6.2.

Tried with clean install TYPO3 7.3 with introduction package. Added extra field with ext_tables.php in introduction package.
Easier to reproduce by installing introduction package and tx_news and enable RTE for teaser field or installing introduction package dce(dynamic content elemens) and creating dce with two rte fields.