[KevinH]

My **guess**was wrong. After staring at the code, I think it is the QProgressDialog popping up even though it will not get shown or updated unless you are dropping multiple files at once.

After the upcoming release I will see if there is a way to keep it hidden for less than 10 files at a time. As with such a short list of files to add, a progress bar is not really needed.

Also I can lengthen the time from AddExisting start until it first appears to hopefully reduce the number of times this happens.

But that is for some future release and not the upcoming one.

Thanks for the bug report.