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Open Chrome menu (3 dots in top-right corner) → More Tools → Developer Tools. You can check network requests sent once you click on the “Print Cards“ button:
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Open the “Network“ tab, enable the “Preserve log“ option, and enable recording (you should see a red icon with a square in a circle in the top-left corner)
Choose the “Print Cards“ option in Agile Cards:
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You should see that each issue is sent one by one (only once) in a separate request. For example, I have 21 issues to print, so I can see 21 requests:
After that, there is a request that gets all of these issues at once:
And then there is a PUT request where it should look the same:
You can check if there are no duplicates in requests for some reason. If not, then the issue will not be associated with our app.