Tens of thousands of travellers were left stranded at Malaysia’s two main land checkpoints with Singapore on Saturday after a major system failure shut down most automated immigration gates, causing hours-long queues at one of the world’s busiest border crossings. The worst congestion was reported at the Sultan Iskandar Building (BSI) Customs, Immigration and Quarantine Complex in Johor Bahru, where foreign visitors faced waits of up to two hours to clear immigration. The problem also affected...