When you open a doc, the filename is cropped even though there is space to show it. Also, even if you hover over the “…” the full filename doesn’t appear as a tool tip, so the only way to see the full filename is to “rename” it to see the text in the editing box.
We use the version number at the end of the descriptive name, so that almost always now gets cropped off and it makes for a very tedious workflow.