I have a Windows server with a file share accessed by a few Macs running 10.13 High Sierra and 10.14 Mojave. The Mojave Macs keep locking out every file they access on the SMB file share. So, the Mac user who opened the file can't save to the file (with a warning about the file being open and in use), nor can anyone else access the file (until the connection is force closed on the server side).
On High Sierra Macs, file handling over SMB appears to be normal with no lockout issues.
Because this is become such a chronic issue, I'm considering restoring the Mojave macs back to High Sierra. But before I do that, are there any other options that might address this issue?
Note that SMBv1 is disabled for security reasons, and is not a fallback option.