While Publishing report to Workspace, there is option to search for reports but not for workspace. Please advise if there is any plan to provide search option for Workspace as well since with so many workspaces (DEV, UAT and Prod for each area), I think this is a required functionality to make publishing process easier.
Based on your description, I think you can try using Powershell the way you want. It retrieves a list of Power BI workspaces that match the specified search criteria and scope. By default (without the -first parameter), it shows the top 100 workspaces assigned to the user.
Thanks Henry for reply. However, I am referrring to Report Builder interface to publish Paginated report to workspace in Power BI Service. the interface doesn't have search box for Workspace. It's only available for report name. ideally it should pick report name automatically from file name and have search box for Workspace to publish.