Folders are doubling by click

That not a new bug, I have seen this in february too. Actual I use version 5.15.1(9407). I click on folder and its create a fake folder with same name again and again with click on it.

I have only start winscp directly in this folder: folderA/folderB/folderC/folderD/ in it folders with number as name: 0,4,5,9,10,13 after click on it I have like 0,4,4,5,9,9,10,10,10,13,13,13,13
After "refresh" the parent folder all is fine, but click on folder its happen again.

See GIF.

Thanks for your post.

This issue is being tracked already:
https://winscp.net/tracker/1736