Just to confirm.
I have seen that behaviour in July 2025 on Argenta app 7.5.1.
And in April 2026 on Argenta app 7.10.1.
And probably many other versions.
I have reported it to Argenta. Crossing fingers, but not holding my breath.
No such problem on the following belgian bank apps: Fortis, CBC (KBC), ING, Hello Bank, Crelan, Keytrade, CPH, VDK, Triodos.
See also https://github.com/PrivSec-dev/banking-apps-compat-report/issues/274