SYMPTOM
When searching a date attribute elements of a report prompt based on SAP BW by entering with a abbreviation form such as year or month.year, after upgrading from Strategy Web 9.3 to 10.4 Hotfix 2, no attribute elements return, as shown:

OBSERVATION
In the environment this issue was identified initially, no attribute elements return when searching by an abbreviated date, omitting day or day.month. In laboratory, the reproduction presented a different behavior where the issue occurs when entering with a full date, without omitting any field. However, the same workaround described below worked.
CAUSE
This is an identified defect in Strategy Web 10.4 Hotfix 2.
ACTION
Currently this issue is still being reviewed for feasibility by our Technology team and it is not scoped for any upcoming scheduled Strategy release.
WORKAROUND
As workaround, enter with a text before the abbreviated date, i.e. xx, 01.2017.
KB423980