I created a field group with just one checkbox field. It should be visible only for posts, and when custom taxonomy is a specific value.
So I defined the condition as Toggle rule, see https://share.getcloudapp.com/2Nuqv6vp
But... the field is not shown: https://share.getcloudapp.com/2Nuqv67n
Actually, when refreshing the page, it is shown for a short while before it gets hidden.
It looks like conditional logic only works for fields within the same field group. I have different field groups, as the cutsom taxonomy applies to many post types, while the checkbox field only applies to posts. With the toggle rule I can set the rule based on the custom taxonomy, with the conditional logic I cannot.
Regarding the conditional logic, it can work with the field ID from other meta boxes. But you need to add the taxonomy ID instead of the taxonomy name like the Toggle rules. Screen record https://share.getcloudapp.com/kpuDJ04o