I changed this setting within an issue in the additional options. The option to change back isn't in the same place in the issue options when it's displayed on the sidebar.
The option also doesn't appear for me in the board settings (it actually changed the setting for me on all boards on all projects).
I just want to change it back to pop-up instead of sidebar view. Can someone please tell me where I can find this setting?
The sidebar is convenient for most issues, but when one includes something like a table you can't read the text as displays 1 word per line. So I need to change it back for now.