Bug in fliename display

Just noticed that the displayed filename at the very top of the viewer does not update properly. E.g. If I have 2 different files open in 3 windows and they are file1 file2 file1, then on clicking the image from left to right then the filename displayed at the top show files1 file2 file1 (correctly) but clicking on the images from right to left the displayed filename does not update and shows file1 file1 file1.

Thanks for the report.
It is noted. Issue SNAP-368.