Tracker Capture App is not applying Mandatory Fields

Support - Assistance technique
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1

DHIS2 Version 2.41.6.
Tracker Capture App failed to apply mandatory rules to tracked entity attributes in the registration (first) page. But it is applied in the web Capture app.
Is it part of Phasing out Tracker Capture although this DHIS2 version still does support Tracker Capture.

Thanks