I tested this and I think that in your syntax above, "path" refers to the absolute path with leading slashes. When I substitute an absolute path including the leading slash for the word "path" in your above command line example, it works correctly and opens the remote file.
I tested this and I think that in your syntax above, "path" refers to the absolute path with leading slashes. When I substitute an absolute path including the leading slash for the word "path" in your above command line example, it works correctly and opens the remote file.
Working command line example: SERVER/ /home/USER/ FILE.txt
gvim -f sftp://
In this case, "path" is "/home/ USER/FILE. txt". That being said, does this still indicate a vim bug?