The export tab can be confusing
If you use the export button from the toolbar (not the tab), selecting a file and clicking "Save" immediately exports the plot. In the export tab, selecting a path and clicking "Save" does not export the plot, you have to separately click "export", which is not immediately obvious.
I'm not certain of the advantage of having a separate path selection. I would propose either removing the path selection, or the export tab entirely, and just using the export button that is not in the tab.