On a similar thread to file name display fields being too small in "open recent files":
When CTRL+Tabbing between multiple open files the filename/path displayed in the pop-up is too short to display the full filename/path.
If the two files have similar names except for the last few digits they are not easily distinguished when switching.
Making the width of the pop-up automatically scale to the file name would be good or truncate the file name where there is commonality between them (e.g. root path)
Cheers,
R