Sometimes when drag and drop file to filemanager the uploading window shows but then just freeze and nothing more happens, while it sometimes works fine and shows a progressbar and upload the files nicely.
The component version is 2.3. It is on a Windows XP machine.

I also have not been able to completely uninstall this addon, only how to disable/enable it.
So how can I uninstall it and then re-install it, or try some other solution to this problem?