User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Safari/605.1.15 Steps to reproduce: Setup is TB 52.9.1 on Mac OS Mojave == Receive a message with attachment == Select download (German 'Abtrennen') == Finder instance opens, browsing to a directory on the NAS (not on local Mac) == Click in file name field to rename the file saved on disk Actual results: TB freezes completely. No effect on 'cancel' or any other button on any window of TB Need to call the OS dialogue to kill TB Expected results: Attachment should have been stored on the NAS and linked to the message, like it works when downloading to a local dir

Happens also when attempting to download to a local directory. Seems that a mechanism which worked since decades is broken now

Fixed in TB 60.2.1.