I don’t touch this widget at all and yet it shows up every so often in “select content to save” window. I don’t modify it at all and it shows there seemengly at random. I could be working on materials or levels and the UI will trigger to be saved. It doesn’t seem to cause any issues, but I’m a bit worried about the file being possibly broken somehow.
Take a look in the reference viewer. I suspect that widget depends on something else, indirectly, that you are working on.