Versions after 2402.1 causing 503 error.

[BurdockBH]

Versions after 2402.1, tested 2406 and 2408, are both causing 503 errors on posts with [toc] on them. Downgrading to version 2402.1 works, but seems there are security issues.

[zedzedzed]

Thanks for the report however it's hard to replicate as it's working for me using the shortcode. My setup is docker based and standard linux, newest PHP, minimal plugins, etc.

Do you get any error messages at all? You may need to check web server or PHP error logs. It will help narrow down the cause of the problem.