Once a month I've been saving iframe details in textarea. Its been working up until this month / today when I went to add a new iframe details and it wont save? It will save just text but doesnt seem to save html anymore?
Hi, since the version 5.1 of Meta Box, we have added a sanitization for all inputs to improve the security. Textarea by default will have the wp_kses_post sanitize callback, which will strips all iframe, script and style.
To bypass the sanitization to make it accept iframe, please add this setting to the field: