Searching for gameplay tag variable values in the blueprint details panel returns no results

The expected behavior is when searching for a gameplay tag value in the blueprint details panel, you will find the matching gameplay tag you are searching for.

The actual behavior is when searching for a gameplay tag value in the blueprint details panel, no result is found even when there is a matching gameplay tag.

This issue appears to be because the code expects FGameplayTag to be filtered and matched in the same manner as a custom user struct, but in practice this is not the case.

This code causing this issue can be found within the ‘GetPropertyNodeValueFilterString’ function, within ‘DetailItemNode.cpp’. The line ‘if (PropertyNode->GetNumChildNodes() > 0)’ evaluates as true for FGameplayTag structures, and returns an empty string as a result.

A potential solution for this can be achieved by refactoring ‘GetPropertyNodeValueFilterString’ to take an extra argument of ‘FDetailItemNode& ItemNode’, which can then be used to replace the line ‘if (PropertyNode->GetNumChildNodes() > 0)’ with ‘if (!ItemNode.IsLeaf())’.

• Create a new blueprint
• Add a gameplay tag variable
• Go to Class Defaults
• Set the Gameplay Tag variable to 'Abilities.MoveTo'
• Use the search bar to search for 'Abilities' or 'MoveTo'
• See that no result is found