This is caused by a bug in GlobalScape FTP Server's
OPTS MLST command implementation - when the client requests specific facts to be sent in respnse to
MLSD commands, GlobalScale EFT Server 7.1.x resets its fact list instead and only sends a file names in response to all subsequence MLST/MLSD commands. Interestingly, this bug was not present in older versions of GlobalScape servers.
This issue was recently discovered by one of our clients. I have already reported it to GlobalScape, but got no response so far. Hopefully, they will fix this soon.
In any case, the next release of Rebex FTP/SSL will feature an automated workaround for this server bug. In the meantime, download a trial hotfix (I sent a link to the full version to your e-mail.)
Users with active support contract, please send us an email to email@example.com and we'll send you a full hotfix version.