I can't remove "Recent" files from Office on WP8.1

I have 925, 928 and 635. I cant clean "recent" in Office app. They just come back. I tried turning off internet, still come back. How to clean Office permanently? Cleaning Recent on onedrive.live.com didn't work either, plus it had different files. On all phones I'm signed in with the same hotmail account. I deleted these 3 files (3 on 925, 2 on 928 & 635) from OneDrive but still show up on the phones

This video shows everything

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