Hello,
first or all - thank you very much for an essential plugin for any WordPress developer. I've been using Joomla! before and its Akeeba Backup solution was amazing. For a long time I was wondering why there's no such thing for WP. Thanks to you, moving WP sites has become much, much easier.
Considering that I live and work in Poland and most of my work is being done on sites with polish as main language, many media files have UTF-8 filenames with polish letters like łżśóźćą, etc. I've found out that Duplicator struggles with creating ZIP archive with proper filenames. All files are being included in the archive, but letters from polish alphabet are changed in filenames which breaks URLs.
The workaround is to exclude the uploads folder, but perhaps there is a way to fix this problem?