Find in Blueprints: Default values of TMap keys are not returned

Context

Find-in-Blueprints can be used to search the current, or all, blueprints. If you enter a simple string, it would return nodes, pins, pin default values and default values for BP Variables (variables defined in BP, but not values for natively defined variables).

Problem

When a BP Variable is a Map type, the values of Keys aren't searched leading to missing search results.

As a consequence, you cannot search for strings or structs like gameplay tags and find matches in BP Defaults if the value is inside a map key. This makes Find-in-Blueprints less reliable.

Test case 1: simple key type

• Create a blueprint BP_FiB_Repro
• Add a Map<string, string> member variable MyMap
• Add a pair to MyMap like ("Foo123", "Bar456")
• Press Ctrl + Shift + F to search in the current blueprint
• Search for "Foo123"
• Observe: The Find in Blueprints result window shows: No results found
• Expected: It should return MyMap as a result.

Test case 2: struct key type

• Create/reuse blueprint BP_FiB_Repro
• Add a Map<FGameplayTag, string> member variable MyMap2
• Add a pair to MyMap like (GameplayTag: Test, "Bar456")
• Press Ctrl + Shift + F to search in the current blueprint
• Search for "Test"
• Observe: The Find in Blueprints result window shows: No results found
• Expected: It should return MyMap2 as a result.