Filter window does not open in Curve Asset Editor

The filter window does not open in the curve asset editor. It appears that no tab manager is provided when creating the curve asset editor's SCurveEditorPanel in FCurveAssetEditor::SpawnTab_CurveAsset, which is needed to create the filter window. 

1. Create a new curve asset (Right click in content browser and select: Miscellaneous > Curve)
2. Select any curve type
3. Open the curve asset
4. Click on the Filter button in the curve editor toolbar (right-most button)

RESULT:

No window opens.

EXPECTED:
A filter window would open (compare to the behavior in the Sequencer curve editor)