Input method: Cannot type input method

[triplc]

In normal insert mode, C-\ works. But it does not seem to work in multiedit.

[Henrik Lissner]

C-\ invokes toggle-input-method correctly for me in normal mode, multiedit mode and multiedit insert mode. I've tested this in vanilla Emacs with:

(require 'evil)
(evil-mode)
(require 'evil-multiedit)
(evil-multiedit-default-keybinds)

The issue likely lies in your private config.