Using the current version of Outlook online, in the current version of Chrome, via outlook.office.com/mail:
If you select this text in an email in the Sent folder (or any other folder):
[Red Text In Bold, Green Text In Italic, Black Text In Standard]
then hit Ctrl+C (or right click and select Copy from the popup menu) to copy the text to the clipboard,
then click on the New mail button to open a new email,
then hit Ctrl+V (or right click and select Paste from the popup menu, because THERE IS NO "PASTE SPECIAL" OPTION) in the new email,
This is the text which is copied to the new email:
[Red Text In Bold, Green Text In Italic, Black Text In Standard]
Do you understand now what people are saying in this thread? If text (or tables, or bullet point/ordered lists, or Heading) are copied in one email and either pasted elsewhere into that SAME email or pasted into a new email, THE FORMATTING OF THAT TEXT IS NOT COPIED. In the current version of Outlook, Ctrl+V now behaves as if it were Ctrl+Shift+V, and the text is automatically formatted according to the basic formatting template of the destination document.
THIS IS EXTREMELY ANNOYING AND RE-APPLYING THAT LOST FORMATTING IS AN ENORMOUS WASTE OF TIME, and we would like Microsoft to fix it.