I am seeing the same effect here, thank you for the clear description. This is caused by having the VA option:
VA Options -> Advanced -> Correction -> Format after paste
turned On. The IDE does the formatting when this option is turned on, and the IDE does not line the indent at the start of the comment lines. We are considering not applying this option to VA Outline drag and drop:
case=53417
but for now the work around is to turn off Format after paste.
Thanks. Turning formatting off is undesired since it helps me a lot when copy-pasting code around ;). Will be waiting for a patch to fix drag-and-dropping.
You might want to map a keyboard shortcut to the command VAssistX.ToggleRepairCase in the IDE keyboard settings to help here, as a temporary work around.