Microsoft Office files (DOC, DOCX, XLS, XLSX, PPT, PPTX) are recognized as compressed Zip archive on KDE neon. Whenever I double click those files, Ark will open them. Then I changed file association of those files in Settings and set my Office program (WPS Office) as the default. Now, whenever I double click an actual Zip archive, my office program tries to open it. To get what I want, I have to right-click and individually choose the program I want to open Office files and Compressed Zip files with from the context menu.
One thing I forgot to mention, those Office files' icons changed to a Zip icon too..