TYPO3 Core

During its initialization, the RTE checks whether or not the stylesheets are accessible. If the stylesheets cannot be accessed, the RTE waits until they become available. If for some reason the stylesheets do not become accessible, the initialization process never ends.

The attached patch defers the check on the stylesheets until after initialization has completed. If the stylesheets do not become accessible, the blockstyle and textstyle dropdowns will remain empty. The contents of the RTE may not be styled as intended. A warning will be written to the browser (or TYPO3) console.

(issue imported from #M17761)