I’m guessing that someone remembered that Bangladesh used to be East Pakistan, and on the back of that incorrectly gave it the same colour as (West) Pakistan. This, of course, raises the question of why Pakistan is classed as part of the Middle East, which I don’t think is usual.
The graphic’’ usage of “Asia Minor” is also idiosyncratic; traditionally, this refers to Anatolia (Asian Turkey). And I don’t remember ever seeing the term “Asia Major” at all.
