Fix adding nodes to nested fragments #4929
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ealmloff
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jkelleyrtp
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Nov 6, 2025
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The
find_last_elementmethod in core used to find the element to insert new nodes after during list diffing was broken for nested fragments. It was finding the first node of the last fragment instead of the last node. This PR fixes the issue and adds a regression testFixes #4924
Fixes #3021