Yeah, it is annoying. No one could predict how certain SEA embassies would be exploited though. Anyone who has the DTV should have docs to hand. I will do the same for my return next month.
That is why the scrutiny has been upped. Many "agents" used Laos especially via SP. Unfortunately, IO cannot distinguish between agent applications and genuine applications.
Someone posted that DTVS from Laos, Vietnam, Cambodia are being scrutinized as that is where many scam applications have been found. Good that you had all the docs to hand to show.