The version available for Mageia 5 is still alpha.
Please update Keepassx2 =>
Please update Keepassx2 (it is still an alpha version)Source RPM:
Pushed latest stable  for mga5 to core/updates_testing. Please test the basic functionality.
Mageia release 5 (Official) for x86_64
Kernel 4.4.50-desktop-2.mga5 on a 4-processor x86_64
MGA5-32 on Asus A6000VM Xfce
No installation issues
Created new database and put some dummy key into it. Closed and reopened database. Seems OK.
@Michael re comment #2
Adding the OK for 64-bit.
MGA5-32-OK advisory =>
MGA5-32-OK advisory MGA5-64-OK
Validating the update
An update for this issue has been pushed to the Mageia Updates repository.