TYPO3 Core

false alert - it actually never showed the flags - closing it for now to lower the stress of the release-team ;)

are you sure? I don't have an install right now but aren't there empty icons displayed under the select field? can you let this report open and I check tomorrow again,thx

well there is an empty icon below the box (that why I reportet it) but actually there have never been language icons in any TYPO3 version (back to 4.2) - would still be great to have them ;)

i checked code and there should be flags as I have, e.g. in tt_content under the language selection something like this for every language:
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<td><a href="#" onclick="document.editform['data[tt_content][NEW4d3d301ab7b27][sys_language_uid]'].selectedIndex=4; document.editform['data[tt_content][NEW4d3d301ab7b27][sys_language_uid]'].className=document.editform['data[tt_content][NEW4d3d301ab7b27][sys_language_uid]'].options⁴.className; TBE_EDITOR.fieldChanged('tt_content','NEW4d3d301ab7b27','sys_language_uid','data[tt_content][NEW4d3d301ab7b27][sys_language_uid]');this.blur();return false;"><span alt="Turkish" title="Turkish" class="t3-icon t3-icon-empty t3-icon-empty-empty t3-icon-empty"> </span></a></td>
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so there should be a flag

You assign the flag to the sys_language record and then you see the flags if you are translating tt_content (or other records) beneath the records.

Backwards compatibility issue is the in previous versions of TYPO3, the sys_language "flag" was a .gif file (e.g. "tr.gif"), and its now only the flags code (e.g. "tr") (see #23519).

Which is why there is an Upgrade Wizard to migrate sys_language to the new style.

Doesn't it work?

ah, now used the upgrade wizard but still doesn't work

well, the attached patch resolves it for pages_language_overlay, but the attached "solution" can't be used for tt_content (or tt_news) because it doesn't provide the "all" language option...

during the test I also found #24788