Comment 9 for bug 1787274

Note to testers, I found it very difficult to create a duplicate transit in practice. I had to enter a barcode in the checkin UI, hit Enter, the immediately control-v paste the same barcode into the input and tap Enter again. I could get it to work about 1 in 10 tries.

For the purposes of testing the checkin UI changes, if nothing breaks in the checkin UI, I consider it a successful test. If you are able to reproduce the problem, an error message will appear in the console log indicating the copy is already in-flight.