Setting left / right pane for fzf commands causes cursor to change to box in iTerm2

- Category
- [ ] Question
- [x] Bug
- [ ] Suggestion
- OS
- [ ] Linux
- [x] macOS
- [ ] Windows
- [ ] Etc.
- Vim
- [x] Vim
- [ ] Neovim

Hi, I was experimenting with this great plugin using the following similar from the README:
inoremap fzf#vim#complete({
\ 'source': 'cat /usr/share/dict/words',
\ 'reducer': function('make_sentence'),
\ 'options': '--multi --reverse --margin 15%,0',
\ 'left': 20
\ })

Currently in iTerm2 I have set the cursor as a vertical bar, however when running the above mapping to open the pane, the iTerm2 setting is changed to box for the current session. I'm not sure if this is an issue from iTerm2 but it seems that when running any FZF command and setting the pane to either left or right changes the cursor and to change it back I have to edit the current iTerm2 session. If the FZF buffer is at the bottom as usual, then the cursor stays the same.