Just sharing my tweet on the blog as well:
Just in case anyone else runs into zR misbehaving in #IdeaVim 0.58, here’s an .ideavimrc workaround: https://t.co/jolz8hDajn #PhpStorm #IntelliJIDEA
— Kevin Kaland ??♂️ #StaySafe (@wizonesolutions) July 16, 2020
The main point: put the following into your .ideavimrc, and reload with :source ~/.ideavimrc
map zR :action ExpandAllRegions<CR>:action ExpandAllRegions<CR>