RTE in Umbraco 13 - <br> tags being replaced with empty <p> tags

Questions
1

When content contains standalone <br> tags in the RTE, TinyMCE replaces them with empty <p> tags on save. For example:

html

<p>Some text</p>
<br />
<p>More text</p>

becomes:

html

<p>Some text</p>
<p></p>
<p>More text</p>

“RichTextEditor”: { “ValidElements”: “…,br[class|id|style],…” }

and

“Content”: { “SanitizeTinyMce”: false }

didn’t help

Thanks,
Alex