Some archives expand files with backslashes in the filename instead of in folders.
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giorgiotani
I just hit this old bug. On Linux it sometimes expands files as folders instead of expanding files in folders due to the slash difference.
https://superuser.com/questions/1382839/zip-files-expand-with-backslashes-on-linux-no-subdirectories
The temp commandline fix in the second answer does work to fix the but after the fact if you realize it has occurred.
I don't know if the affected tool is part of Linux or Peazip.
Thank you for reporting this issue.
I've currently tested ZIP files created with PeaZip on Windows with relative paths (default setting), full paths, and absolute paths, and then extracted with PeaZip on Linux, and macOS - using native PeaZip builds for Linux and macOS, not running PeaZip for Windows with Wine in this batch of test.
In all tested cases the archives are correctly parsed (correct directory separator is applied) either for extraction, listing, and test operations.
I'll keep testing the issue to find what Windows utilities can produce archives triggering the error when extracted by PeaZip on Linux.