The issue is described in this closed issue: Sometimes non-customized Zoom Meeting window appears while using custom UI feature
This is a rare issue but I wanted to reopen the discussion since we’ve seen this occur a few times recently and captured logs for an occurrence - also @jon.lieblich requested as a troubleshooting data point whether this issue was present on the latest version of the released SDK and we were able to capture logs of an occurrence on the latest SDK (v5.5.12511.0420):
In the above logs, this issue occurred after our app launched July 15 ~8:40 AM CT local time and the logs should cover the next 3 hours of meeting launches that all showed zoom default meeting UI in addition to our customized interface. The issue only gets resolved after an app restart - seems like something goes wrong with the initialization of the SDK even though we are hardcoding needCustomizedUI param to true in the call to initSDKWithParams which is only called once anywhere in the code.
Additional context about the issue is included in the ticket linked above.
Thanks in advance for the assistance and let me know if I can provide any additional info to aid the investigation!