TYPO3 Core

With TYPO3 v12 and the new TypoScript engine, it's not possible anymore to use a TypoScript constant in left-hand side.

Add a constant like this :

lib.test = leftContentValue

And a setup like this :

test.{$lib.test} = The value
test.leftContentValue2 = {$lib.test}

doesn't work for the first line and have weird result for the second line if the first line is present, i.e.:

test.test.leftContentValue2 = leftContentValue

instead of :

test.leftContentValue = The value
test.leftContentValue2 = leftContentValue

Have a look at attached screen capture.
This is a regression with version 12.