Combining Files

When I would combine files in the past, I cold simply select the files to combine, right click, select combine files, Adobe would automatically open the combine files tool, with the files I had selected and I cold either arangem them how I want them or simply select combine and it would merger the files. Now when I select the files I want to combine, adobe opens up a paine showing all my rescent files, and I have to look through them all to find the files I want to combine, select the files, then selelct combine, then at that time the combine tool opens.  I don't think I've changed any settings, but it's very annoying to have to select the files twice to get back to the combine tool.