@George *****
Masks probably not required anymore but can't say for sure. What I do know is that the Chinese visa application center, both in Hanoi and Bangkok (and other locations such as Kuala Lumpur) still require masks.
Masks are also required at the Malaysian consulate in Bangkok.
Now Masks weren't required when I visited the Thai consulate in Savannakhet, Laos nearly a year ago now but yeah, it wouldn't surprise me if some Thai consulates still do. Having said that, I think they've finally started to move on.