Having a problem with Composer/HTML Blocks in version 5.6.3.2. Whenever I try save content that contains a number, it deletes the entire content and just saves as 0, if it only contains letters then it saves correctly. If I go and edit the database directly it also save correctly, though it's a bit of a pain and not feasible long term.

The title and short description areas work fine, it's just where you would put the main post for Composer.

Any help would be appreciated. Thanks.