Chrome version: 61.0.3163.51 dev build
Chrome Platform version: 9765.31.0 dev channel caroline, sentry devices

Steps to reproduce:
1. Open Multiprofile Files app instances (like Files App 'A' opened in profile 'B').
2. Open Files app 'B'. Put 'A' and 'B' side by side.
3. Try drag and drop g-documents (like gdoc, gsheet etc) from Google drive 'A' to  'Google drive 'B' and viceversa.
4. While copying files to G drive, a Share dialog opens to choose the sharing status.
5. When this Share dialog opens up, click on Cancel button.
6. Observe that 'Copying...' message is shown always on the LHS of Files app.
7. Try to download an image file from Chrome browser of profile 'B'.
8. While saving the file, observed this message was still displayed on the LHS of 'Save file as' dialog window on 'B'.

Expected Result:
'Copying...' message should be erased off, when sharing files between G drives is cancelled. Also, this message should not be seen on 'Save file as' dialog box.

Please refer the attachments for clarity.