After a fresh WordPress installation and installing Woodmart, I cannot use the theme file editor for php files (functions.php). Error is: Unable to communicate back with site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP.
I disabled all plugins, hosting settings allow everything, I have multiple sites with exact setup and no issues.
Other (default themes) are editable, just not Woodmart.
I removed the WordPress installation and reinstalled, then installed Woodmart again and still same issue.
What is happening?