Grouped tracks are not editing together (specifically, Flex Time)

Hi all,

So, I have successfully flex edited grouped tracks a dozen times in logic, but suddenly, it seems like the function is not working in a particular project. Overall, Logic Pro has been super glitchy/freezing on me since I did the most recent update, but I think this predates that by a few days.

Tracks are grouped ✅

Editing is turned on ✅

Quantize Locked is on ✅

Groups are on ✅

Flex Time is on and active on the three tracks ✅

Here's a short screen recording.

Thanks in advance!