complete event fires once per upload invocation, not when all uploads finish

[dzej1]

Initial checklist

• I understand this is a bug report and questions should be posted in the Community Forum
• I searched issues and couldn’t find anything (or linked relevant results below)

Link to runnable example

https://github.com/dzej1/uppy-emiting-complete-envent-even-when-not-completed/tree/main

Steps to reproduce

Prerequisites

• At least two large files, so the first upload does not finish immediately

Reproduction Steps

1. Start an upload with file A.
2. Before file A finishes uploading, trigger upload again with file B
3. Observe the complete event.

Expected behavior

complete fires once when the uploader becomes fully idle (all files finished)

Actual behavior

The complete event is emitted once for every upload invocation, not once when all uploads have finished.

Screen.Recording.mov

[mifi]

Does the same happen if you use the normal Uppy instance with the dashboard?

[Murderlon]

If you try it on https://uppy.io/examples/ you'll see that you have to manually start the second upload if you add a file during another upload, which presumably also gives two complete events