There is an issue where renaming assets keep the old files, which can easily occur after renaming files after a lunched project. This issue keeps old versions of files, these files keep in the content folder, retaining their old names as well. This issue does not appear to be a regression.
Versions Tested: Issue occurs in all versions tested
4.17.2 CL - 3658906
4.18.3 CL - 3832480
4.19p3 CL - 3861363
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-54776 in the post.