"The Silph Research Group recently observed some changes to weekly Adventure Sync rewards! Here is a breakdown of our findings, including some curious observations and analysis of potentially missing reward bundles."

#PokemonGO: After detecting a change in Adventure Sync weekly distance rewards during December 2018, the Silph Research Group set about carefully collating over 500 sets of rewards achieved by Silph Researchers.Read more here: http://bit.ly/2TPsDQT rewards are now guaranteed for both the 25km and 50km reward tiers.25km and 50km reward tiers (typically) continue to yield random rewards such as eggs and rare candy as well as newly added Silver Pinap Berries.The chances of receiving an egg have been significantly increased if you have the available space to receive one.Pokémon hatching from weekly distance reward eggs have become more diverse, but some rare species (like Riolu) remain much more common in these eggs.It’s possible to receive no additional random rewards, especially (but not always) if you don’t have any free space for eggs.It is hypothesized that these missed rewards may be due to the weekly distance reward system attempting to apply an additional bundle after it was already supplied. via /r/TheSilphRoad http://bit.ly/2CnrAAq