Freeze when uploading multiple files

[numbr007]

Cyberduck for macOS seems to lock up when uploading multiple files via FTP to certain servers, particularly those hosted on Doteasy. Attempting to transfer multiple files via drag-and-drop to the browser window results in an endless progress bar, requiring a FORCE QUIT of the Cyberduck app. Using Cyberduck 8.3.2 on macOS 12.3.1. Have attempted this process for numerous different clients whose sites are hosted on Doteasy; it happens every time.

[BrainScanMedia]

I get crashes and lockups as well. I'm a web designer and when I open a connection to Ubuntu Server I get massive issues. Uploading more than 4 files ~ HTML, JS, PHP files at once crashes CyberDuck, Locks Up, or Gives me an Error saying connection not available. I have to do one file at a time in order for this to work. Its horrible... If I try to download a few files I get the same results... I moved on to Fetch FTP Client, its like Cyber Duck but stable.

[numbr007]

I've since seen this behavior with other web hosts as well as Doteasy. Hostmonster, for example. You HAVE to upload one file at a time, or Cyberduck just locks up. Really frustrating.

[dkocher]

Regression from ced265d.

[dkocher]

Additionally this could be caused by #13051.