I have noticed there is a bug in Ark when I extract certain zip files. It seems to occur when the files are not contained within a folder inside the archive although I'm not sure it does this for every zip file that has files without a subfolder.
When I select "Extract archive here, autodetect subfolder" the archive is extracted to a new folder. However, all the files in that folder have the folder path appended to the beginning of the filename. For example, a zip file named "Example" contains these files, "file1.txt" file2.txt". When it is unarchived the files are named "Example/file1.txt" and "Example/file2.txt".
Obviously, the files are not usable and if there are a lot of files contained in a archive, it is a pain to have to rename them all. If I extract the same zip file in a Gnome based distro, all of the files are named properly.