Hi,
By design this should not happen. However in some cases (e.g. MacOS where /tmp is a symbolic link to /private/tmp) the path reported by GDB can be different from the path used to transfer/build files, so VisualGDB won’t detect that it’s mapped.
Does the problem reproduce if you create a new project from scratch? Could you please send us the .vgdbsettings file from that project? Could you also provide us with a GDB log (select ‘all GDB interaction’ in the GDB Session window)?