The Windows version of the FileZilla client opens more SFTP connections than configured

[dmitry]

The login type is set to interactive (for two factor authentication).
The maximum number of connections under transfer settings is set to 1.
Despite that, FileZilla opens 3 connections when I drag and drop a directory to download it.
This only happens in the Windows version, the Mac version is fine.

Log:

Status: Connecting to xxxxxx:2222...
Status: Using username "yyyyyy".
Status: Connected to xxxxxx
Status: Retrieving directory listing...
Status: Listing directory /home/yyyyyy
Status: Directory listing of "/home/yyyyyy" successful
Status: Retrieving directory listing of "/home/yyyyyy/test"...
Status: Listing directory /home/yyyyyy/test
Status: Directory listing of "/home/yyyyyy/test" successful
Status: Retrieving directory listing of "/home/yyyyyy/test"...
Status: Directory listing of "/home/yyyyyy/test" successful
Status: Connecting to xxxxxx:2222...
Status: Connecting to xxxxxx:2222...
Status: Retrieving directory listing of "/home/yyyyyy/test"...
Status: Listing directory /home/yyyyyy/test
Status: Directory listing of "/home/yyyyyy/test" successful
Status: Using username "yyyyyy".
Status: Using username "yyyyyy".
Status: Connected to xxxxxx.nyp.frbres.org
Status: Starting download of /home/yyyyyy/test/file0
Status: File transfer successful, transferred 104,857,600 bytes in 1 second
Status: Starting download of /home/yyyyyy/test/file6
Status: File transfer successful, transferred 104,857,600 bytes in 1 second
Status: Starting download of /home/yyyyyy/test/file2
Status: Connected to xxxxxx.nyp.frbres.org
Status: Starting download of /home/yyyyyy/test/file3
Status: File transfer successful, transferred 104,857,600 bytes in 1 second
Status: Starting download of /home/yyyyyy/test/file7
Status: File transfer successful, transferred 104,857,600 bytes in 2 seconds
Status: Starting download of /home/yyyyyy/test/file1
Status: File transfer successful, transferred 104,857,600 bytes in 2 seconds
Status: Starting download of /home/yyyyyy/test/file4
Status: File transfer successful, transferred 104,857,600 bytes in 2 seconds
Status: Starting download of /home/yyyyyy/test/file5
Status: File transfer successful, transferred 104,857,600 bytes in 8 seconds
Status: Starting download of /home/yyyyyy/test/file9
Status: File transfer successful, transferred 104,857,600 bytes in 2 seconds
Status: Starting download of /home/yyyyyy/test/file8
Status: File transfer successful, transferred 104,857,600 bytes in 2 seconds
Status: File transfer successful, transferred 104,857,600 bytes in 3 seconds
Status: Disconnected from server
Status: Disconnected from server
Status: Disconnected from server