I had a look and was only able to reproduce this issue in Google Chrome on an Android device. The same issue didnt happen in any other browser, chrome on a windows computer or ipad.
I saw that that blueimp upload tool that this plugin uses had an update 29 days ago, so I installed the update on my demo website and the issue is gone.
Can I confirm which browser/device you saw the issue on.
Can I confirm that the issue isnt happening on the demo website?
OK, I’ve just released 2.7.4 with the updated version of the blueimp file upload plugin.
Can you give it a go and let me know how you go.
My Android phone is getting slow, but it seems … slower to upload? That is, there appears to be a delay between selecting the file and seeing the upload start. But it does work.