Notice "Function _load_textdomain_just_in_time was called incorrectly"

[rvdsteege]

Since WordPress 6.7 the following PHP notices are triggered when text domains are loaded before the init action:

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the pronamic-ideal domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.)

This has also been reported in https://wordpress.org/support/topic/function-_load_textdomain_just_in_time-was-called-incorrectly-69/.

[rvdsteege]

The announcement mentioned in pronamic/wp-pronamic-pay-woocommerce#77 (comment) has been published.

Tip: Starting with 6.8 you don't even need to call load_plugin_textdomain() anymore even when your plugin is not hosted on WordPress.org. This will be announced as soon as 6.8 is in beta.

From https://make.wordpress.org/core/2025/03/12/i18n-improvements-6-8/:

In short:

• If your plugin/theme is hosted on WordPress.org and requires WordPress 4.6 or higher: you don’t need to use load_*_textdomain()
• Else, if your plugin/theme provides the Text Domain and Domain Path headers and requires WordPress 6.8 or higher: you don’t need to use load_*_textdomain()