Indeed the issue is quite different. At first, I see that the described behavior happens only under non-IE browsers. Also, it is experienced only when there are long paragraphs pasted.
I logged this as a separate bug, so that it could be further researched why these BRs appear out of nowhere. You can track this via this feedback portal item
. As appreciation for the report I am updating your Telerik points.
Also, as a resolution you can use the suggested workaround in the reported item.
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