[TYPO3-core] RFC #7855: IRRE doesn't save collapse/expand state of nested IRRE records

[Benjamin Mack]

Hey all,

this is a SVN patch request.

Type: bugfix

Branches: trunk, 4.4

BT reference: http://bugs.typo3.org/view.php?id=7855

Problem Description:
When you use IRRE with multiple nested fields (like with powermail:
tt_content => fieldsets => fields), the expand/collapse state of the
second level is not saved. The patch fixes it.

Solution:
There is a "array_unique()" call, and if I remove it, everything works.

Notes:
Olly, can you tell us why there is the array_unique() call, and why it
is needed?

All the best,
Benni.
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