This actually makes perfect sense, in the age of "Bluey" and Disney Junior shows which are, ultimately, 2 independent 12-minute segments (sometimes with a bumper in the middle, but no mid-show commercials). And really, this isn't a big deal - "Sesame Street" adjusts their format on a regular basis - it actually made for an interesting contrast when my kids were little, because we'd watch the new half-hour episodes, then double back a few years to the longer 1-hour episodes anchored by Murray and
Ovejita, then (thanks, HBOMax) dive deep into the archive and find Big Bird in Japan or Don't Eat the Pictures.