UserAgent: Mozilla/5.0 (X11; CrOS armv7l 11151.113.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.127 Safari/537.36
Platform: 11151.113.0 (Official Build) stable-channel nyan_blaze

Steps to reproduce the problem:
1. Open files app
2. Plug in Flash drive
3. Files app notification
Removable device detected.
Sorry, your external storage device could not be recognised. 

What is the expected behavior?
Normal drive to show in files app, then can be accessed.

What went wrong?
OS after recovery 70.0.3538.110 - External drive works fine.
OS after Auto update 71.0.3578.94 dated Tuesday 11 December 2018 and Auto update 71.0.3578.127 dated Friday 11 January 2019 
External drive not recognised.

Did this work before? Yes 70.0.3538.110 

Chrome version: 71.0.3578.127  Channel: stable
OS Version: 11151.113.0
Flash Version: 32.0.0.101 /opt/google/chrome/pepper/libpepflashplayer.so

Please fix this bug asap as it used to work fine and I need important files to be backed up to other then online.