On multiple installs of WP using ACF 5, I’m having issues using the “Show this fields group if…” function when showing by page. Only two pages show as options, followed by (no title)(), which when chosen becomes the name of the field group. Anyone else seeing this behavior? Screen shot attached.
I had the same problem and I`ve just realised that after switching off all plugins, except ACF solves the problem. After some tests I have discovered that problem was caused by Post Types Order plugin.
Thanks for the tip. I deactivated Post Types Order and this solved my issue as well.