We are sorry to hear about your experience.
Service Fabric Product team hosts monthly Q&A session on the third Thursday of every month for past few years. We had one today 04/15/21 and recording will be posted here. Recordings of our past Monthly community call is also available in same location.
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Update on GitHub Open source code repo**: we are actively working on streamlining our internal build systems to enable us to update the code in OSS repo in automated fashion for all future release and hence the delay. Plan is to release the Linux code packages by end of this month(April) and Windows in the following months. We don't have ETA yet for Windows, since we need to resolve the internal dependencies to meet all security and compliance standards.