Hi, thanks for the very convenient package. I find an issue when using it in org-mode. I have (setq org-hide-emphasis-markers t) in my config.

Sample settings:

(use-package mwim
  :bind (("C-a" . mwim-beginning-of-line-or-code)
         ("C-e" . mwim-end-of-line-or-code)))

(setq org-hide-emphasis-markers t)

Reproduce steps:

1. Create an empty org-mode buffer, and press RET to create some new lines.
2. Move the cursor to any previous line to ensure there are at least one line below.
3. At the end of current line, enter ~some text*~ (* denote cursor. Note that the markers are hidden at this moment.
4. Call mwim-end-of-line-or-code or other variants to move to end of line.

Now, the cursor is moved to beginning of next line.

I do this because this is my workflow when typing and use smartparens to auto insert ~~ and type texts then move out of the markup area to continue typing.