Possible BUG in Adobe scan

In Adobe scan, while scanning multiple pages and saving as pdf there maybe a bug. While making a pdf with multiple pages and saving it in in a custom name. If a second pdf with another set of pages are made and the name starts with the same letters as the pdf of first then the second pdf won't be created. This happens only if the two pdf are created in the same day. While changing the first letter of Second pdf from small to capital, the pdf is saving.