Hello,
I'm sorry for my late response.
So i Updated my Version to 18.1.0.48 and tried it again.
The answer you told me is that it is not possible to remove a file from an existing list and then upload the remaining files, right?
So why you support this:

?
How do I have to handle this if I accidentally selected an incorrect file and added it to the uploader, then i want to remove it but after the removal the actionComplete will not trigger anymore?
Maybe i will explain it step by step:
- I add 5 files to the uploader
- i remove 1 from the uploader clicking: X
- there are 4 files left
- i click upload
- the 4 files are in my upload directory, but then the actionComplete will not be triggered
In you example project the same happens:
This example is with 0 files removed:

This example is with one removed, and there is no loging entry in the console:
TY very much for your time.
Best regards Dominic