Issue Summary

Can't upload new attachment version by Companion app for large attachment sizes

Steps to Reproduce

1. Navigate to confluence administration -> Attachment Settings. Increase "Attachment Maximum Size" value to 400mb
2. Generate MS Word document which size exceeds 250mb megabytes
3. Create new Confluence page
4. Upload previously created document to the page
5. Save the page
6. Preview attachment and choose "Edit" option to edit document by companion app
7. Add any changes to the file and try to upload it back to Confluence

Expected Results

New attachment version is uploaded back to the Confluence page

Actual Results

• Attachment cannot be  uploaded to the page, progress bar seems to be stuck
•  Below exception might occur in the log file:

  * 2020-12-22 14:26:11,968 WARN [http-nio-8090-exec-33] [jwt.internal.sal.DefaultAuthenticationResultHandler] createAndSendFailure Failure during JWT authentication
  -- url: /rest/analytics/1.0/publish/bulk | traceId: <>
  com.atlassian.jwt.exception.JwtExpiredException: Expired at <date> CET 2020 and time is now <data> CET 2020 (30 seconds leeway is allowed)
  

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available