Original reporter: Sanghamitra Mukhopadhyay, ISIS

Describe the bug
The interface Function(Q) has the Add Workspace function. However this is restricted to files with names ending with *_Result. It cannot find files that have been saved using Save Project. The workflow that generates the files to be used creates a group called *_Results with a single workspace called *_Result. The Save function creates a single workspace with name *_Results. This then cannot be found as it has the extra s that the Add Workspace function does not recognise.

To Reproduce
Navigate to
Interfaces -> Inelastic -> QENS Fitting -> Function(Q)

Click Add Workspace and see what files are available.

Expected behavior
Users should be able to access files they have saved in Mantid (including through Save Project) and use them in the interfaces they are intended for.

Platform/Version (please complete the following information):

• OS: Windows
• Mantid Version: Present in v6.11 and the current nightly (not tested on earlier versions so unclear when this issue started)

Additional context
It looks like the functionality to do this was introduced in v6.11 (see #37657 for more details). This looks to be an edge case where a group workspace that contains only a single workspace is being saved as a single workspace with the group name rather than the individual workspace name.