how can we show all transition as button rather than dropdown to user on issue view screen in JIra
You can change the number of buttons that appear on the page. For Cloud, following is the process:
Create a support request at support.atlassian.com with the number of transition buttons you want, and a 15 minute maintenance window (with 24 hours of notice) and Atlassian Support will configure it for you. (We'll be working from Advanced workflow configuration).
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