File renamed in DropBox backend is missed in oC server when we delete it without refreshing the browser

[davitol]

Steps to reproduce

0. Enable Dropbox app. (release/1.1.0).
1. Set up Dropbox mount point, grant access and so on. (all ok).
2. Create a file via WebUI
3. Rename it in the DropBox Backend
4. Without refreshing the oC WebUI page, delete the file.
5. Browse to the Trashbin

Expected behaviour

The deleted file should appear renamed in the trasbin

Actual behaviour

Trashbin is empty and the file is missed in the oC server, but kept in DropBox Backend.

Server configuration

Operating system:
Ubuntu 16.04

Web server:
Apache

PHP version:
7.2

Cache
DB

ownCloud version: (see ownCloud admin page)

ownCloud 10.0.10

Updated from an older ownCloud or fresh install:
Fresh

The content of config/config.php:

Are you using external storage, if yes which one: local/smb/sftp/...
Yes, dropbox.

Are you using encryption:
No.

Logs
Nothing appears in the logs as warnings or errors.

Client configuration

Browser
Firefox