Hi Massimo,
Question here is why we have installed both UI addons.
UISRA008 is for wave 1 specific to Approve Travel Expense
UIX01TRV is for wave 2, which includes for all travel applications.
Latest UI 1.18.11 is also available. Please check if they have any corrections.
https://openui5.hana.ondemand.com/docs/guide/ReleaseNotes-1.18.html
Regards,
Tejas