list_clipboards command was modified, which was the primary reason for issuing the hotfix revision, and a small update to the paste_next_clipboard command was included. Both of those changes should be pretty self-contained.
In addition, a change did get included in the hotfix, on line 378, a call to clear the lineflags on the clipboard header line was added to the _add_clipboard_header function. It's part of the fix to be will be included in the next release, along with changes to the binaries, That change could be affecting with your workaround, I did not test with your changes.