Problem: After updating to WPML 4.9.0, several wp-admin pages cause PHP timeouts (504) or memory exhaustion. The issue is linked to the DebugBackTrace class being instantiated without a limit in multiple places, causing excessive memory usage. Additionally, a recursive loop triggered by _load_textdomain_just_in_time causes incorrect loading of WooCommerce translations when backtrace is disabled. Solution: Note that these known issues were solved in WPML 4.9.1 and 4.9.2.
We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If issues persist, please open a new support ticket at WPML support forum for further assistance.
