[Tomasz Dziuda]

Hi,

I suppose that your issue is caused by fact that TinyMCE editor removes some tags.

You can try to override editor config: https://getpublii.com/dev/how-to-add-custom-config-or-js-for-post-editor/

You should use something like this:

`{
extended_valid_elements: ‘*[*]’
}`

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