"Datum des Einschreibens" is never saved (also not when using the assistant)

[rugk]

STR

Use the new assistant and select "Yes" when it asks "Is this a yellow letter?".
Enter a date.

What happens: It is not reflected at the end of the process in the request, actually.

What should happen: AFAIK it should be entered into "Datum des Einschreibens".

System

Firefox 135

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Edit: I noticed this also happens when you manually try to enter it. Video:

Bildschirmaufzeichnung.vom.2025-02-17.17-28-57.mp4

Reproduced on https://fragdenstaat.de/anfrage/stand-kommunikation-zu-automatischer-digitaler-parkraumkontrolle-scan-cars-auf-initiative-hamburgs-4/#nachricht-974212