Hi Below is the fix given by adobehttps://drive.google.com/file/d/1Ybn3zlJb8K3BLeHpugCWmJ7DN4ev59rs/view?usp=sharing

We raised the issue to day care. They gave us fix for that

When RTE plugin is added in a multifield in aem 6.4 with service pack 2 I am facing facing below issue when submitting dialog.But when added the same dialog in 6.4 without service pack it is working fine. Has anyone come across same issue? Is it because of service pack 2?