when you paste formatted text/table into reach text control, it's by default pasted as plain text. but there should appear a flying"Paste options" icons which should allow you to take over source formatting
Thank you for your response!
My view is different from yours. In my form it looks like this:
and if I try to paste a table, for example, this table:
it results to this:
and also there is no "paste options" available. Is there any workaround on this?
you are likely on different environment.
is that sharepoint online?
I've found folowing article that describes what you experience Copy and paste in Office Online - Office Support
it seems to be limitation of online platform.