Can't edit names in index of books

[Lorenzo García Blas]

I edit a book and try to modify the index of that book.
If I select one or several items of the list on the left, and try to change the names of those items by selecting the second option of the context menu (right click), I get this error.
However, I can do it by selecting just one item and pressing F2 key

calibre, version 5.0.1
ERROR: Excepción no considerada: <b>TypeError</b>:unhashable type: 'QTreeWidgetItem'

calibre 5.0.1 embedded-python: True is64bit: True
Linux-5.7.0-050700-generic-x86_64-with-glibc2.2.5 Linux ('64bit', 'ELF')
('Linux', '5.7.0-050700-generic', '#202005312130 SMP Mon Jun 1 01:33:12 UTC 2020')
Python 3.8.5
Interface language: es
Successfully initialized third party plugins: Actualizador Biblioteca EPG (1, 7, 0) && Count Pages (1, 10, 0) && EpubMerge (2, 11, 0) && Find Duplicates (1, 7, 2) && Modify ePub (1, 4, 1) && Quality Check (1, 10, 1) && Resize Cover (1, 1, 0)
Traceback (most recent call last):
  File "site-packages/calibre/gui2/toc/main.py", line 631, in bulk_rename
  File "site-packages/calibre/gui2/toc/main.py", line 631, in <dictcomp>
TypeError: unhashable type: 'QTreeWidgetItem'

Thanks a lot.

[Kovid Goyal (kovid)]

Fixed in branch master. The fix will be in the next release. calibre is usually released every alternate Friday.

 status fixreleased