Adding ConfigHierarchyEditable to a config property makes the editor crash when said hierarchy button is clicked

Development Pipeline & Plugins
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1

It appears that the failing code is this:

`FConfigFile PlatformIniFile;
LocalConfigCache->LoadLocalIniFile(PlatformIniFile, *ClassConfigName, true, *SelectedTargetPlatform);

for (const auto& IniFile : PlatformIniFile.Branch->Hierarchy)
{`Specifically, a recent change to FConfigFile introduced the Branch pointer, and during this call to LoadLocalIniFile that pointer is not set to a valid object.

2

Steps to Reproduce

  1. Add `Config, meta = (ConfigHierarchyEditable)` to a UPROPERTY
    1. Easy repro: “Plugins - Common UI Framework” > Visibility > Platform Traits uses this
  2. Navigate to the property in Project/Editor Settings
  3. Click on “Edit the config values of this property”

Observe: Editor crashes.

3

Update: Looks like this was fixed in CL#41796287

4

Correct, this has been fixed as of UE 5.6. Sorry for the troubles.