Hello, i do some tests again, if i only copy and paste (or download a file using my browser) and save to dropbox folder, all is working normally, insync do the upload and not download after (normal behaviour).
The problem appears when i use Telegram Desktop application, if using Telegram Desktop and saving the files inside the dropbox synced folder insync uploads the files, remove the local copy (!?) and then start to download the same file from dropbox cloud again (correct, since insync removed the local file, i don’t know why).
I do the same test, saving from telegram desktop to Google Drive Folder and to OneDrive folder, the problem does not occur on these 2 services, only on dropbox sync.
I send the logs.db and out.txt to support e-mail.