Well now that Zwift is charging a lot more per month, my tolerance for the bugs and deficiencies is definitely going down.
Group riders nearby has been broken for the last several updates. e.g. in Watopia even through a majority of riders will take a flat route it sends you up the hill on the first turn every time regardless of what everyone around you is doing, well before any opportunity to warm up. This is very irritating if you just want to hop on and do an unstructured ride or a ride with others which, other than racing, is what Zwift’s advantage over other apps is in the first place (there are much better programs for structured workouts). It seems the feature is just flat out broken.