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Please share the debug logs and console logs How to capture Javascript console logs. HAR logs https://confluence.atlassian.com/kb/generating-har-files-and-analyzing-web-requests-720420612.html
Also with the recording of the network activity while performing the analyze phase. Please make sure to start the recording to be started a bit earlier before the step.
Also please share us a recording video in gif or .mp4 format to help us understand the issue better exactly when this issue is occuring.