“It’s a regulation from a while back but we have only just applied it,” she said. “If people are working in Thailand we think they should go to their local immigration office to get a one-year extension.”
The consulate looks at applications “on a case-by-case basis”, she said, but in general it will not issue one-year non-immigrant B visas.
Some confusion has been generated by an original (and, it has now been established, correct) report on ThaiVisa.com that one-year multiple are no longer issued in KL, while a local report quoted the Foreign Ministry in Bangkok as saying that one-year visas are still being issued in KL.
It now seems that, theoretically speaking, they are. But in practical terms, they are not.