I have a workspace with a number of projects.
Most projects use the workspace tag file.
Project X has its own tag file.
It is a wildcard project -- all *.XYZ files under the workspace root, recursive, "add as wildcard".
In list-buffers, project tab, I see 3 of the files in Project X listed with no path - empty.
When I try to open them, Slick complains that it can't find them in whatever the current directory is.
When I look at ProjectX.VTG from the TagFiles dialog, those three files have complete path information.
They are the 3 files which appear in the root of the workspace.
I think this may have to do with setting TagFileDir, but I don't know for sure. (When I removed tagfiledir from the workspace, it didn't fix the issue, nor did rebuilding the tag file)