Deleting .svn from a zip file doesn't work

[olivers]

Using version 9.50.23. I created a zip file of a source tree with directories in (on multipe levels) that are called ".svn". No problem creating the archive, but then I opened it and wanted to delete these directories. I select one of them, run the delete command (tool bar, delete key, context menu) and the small Delete dialog pops up. I leave the "Selected files" radio button active and hit the "Delete" button. Something is quickly shown in the status bar and vanishes again and the ".svn" directory is still there in the archive.

[spwolf]

there is an known bug with deleting folders with dot in fron of their names...