recursively undo cloned trees #3690
Merged
+111
−1
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Fixes: #3684.
Relates to: #3652
The issue was that when we locked a form with an input inside where the input changed, the form was cloned and then later the input inside was cloned as well, stored inside the already cloned parent. When undoing, previously the simple patch copied over the PHX_PRIVATE of the cloned elements, but with the full DOMPatch, the privates of the source element were copied, discarding the clone of the input. With this change, we check if we are undoing locks and manually copy over nested clones to ensure that they can be correctly applied afterwards.