Categories not rendering as checked when editing a location.
Research
The problem stems from the JavaScript for locations: slp_power_location_edit.setup_edit
The IDs for the category checkboxes is:
in-stores-<category_id>-2
The script looks for locations WITHOUT the -2 suffix:
location_edit_options.form_div.find(
'#in-stores-' + jQuery(this).attr('data-value')
).prop('checked', true);
Adding a + ‘-2’ to the end of that string fixes the issue… but why does the ID have a -2 at the end in the first place… let’s dig deeper instead of just throwing a ‘-2’ on the end…
Fucking WordPress- they introduced Breaking Changes in 6.4.0
This is NOT documented as a breaking change.
In version 6.4.0 they introduced a new function \wp_unique_prefixed_id()
This is called by the checklist generator: \wp_terms_checklist()
Which is used via PHP to generate the Checklist template for categories for the Power editor.