Just updated to Sequoia 15.1, the keyframing the scale no longer works on some clips

Just updated to Sequoia 15.1 as I had another unrelated bug I was trying to fix (not in Premiere), and suddenly keyframing the Scale in Effect Controls no longer works. Changing the scale works until a second keyframe is added, at which point it will keep the scale of the first keyframe. All i'm trying to do is a simple push-in. Tried on multiple clips on multiple timelines and the problem still persists. Both keyframes have different values but there is no change in scale visually. Anyone else have this problem?

Using Premiere v 25.0 on a M1 Macbook.