there were some changes several updates back, here was my experience with it:
in short - yes - seems to be a lot more surgy at the moment for me too.
(edit: this was the update: Game Update - March 16th, 2021
Pack Dynamics
- Over the last few months we have been testing a number of improvements to how riders in groups behave in Zwift. These changes are now rolling out to all users and should result in improved pathing of riders in large packs. Users should also notice fewer instances where other riders appear to ride through the dirt or off road.)