TYPO3 Core

The code of the method substituteMarkerArrayCached has been moved into
file ContentObjectRenderer.php.

The code looks unchanged. The problem remains the same.

// Finding keys and check hash:
$sPkeys = array_keys($subpartContentArray);
$wPkeys = array_keys($wrappedSubpartContentArray);
$aKeys = array_merge(array_keys($markContentArray), $sPkeys, $wPkeys);

I dont have a patch at the moment, but i am using the rn_base extension since some years. There are the same function with some changes, which fixed this issue.

Have a look at https://github.com/rengaw83/rn_base/blob/master/util/class.tx_rnbase_util_Templates.php#L295

The reason is, how the md5 store key was created.
This should not created with a merge of the marker array keys.
The store key has to be created with all marker array keys itself.

old:

$storeKey =  md5('substituteMarkerArrayCached_storeKey:'.serialize(array($content, $aKeys)));

new can be:

$storeKey =  md5('substituteMarkerArrayCached_storeKey:'.serialize(array($content, $sPkeys, $wPkeys, array_keys($markContentArray))));

I hope it helps a little bit.