Actual : Entire cell is bold
Expected : Same as cell in Google sheets
Note : This behavior is bad in case one had a Sheet table to copy, which might have different formatting in different cells...
Unfortunately Stack Overflow isn't the right forum to post issues in Google products.
You can however report this directly to Google by following the menu path Help > Report a problem
directly from the Google Sheets interface when viewing a sheet. A pop-up will appear entitled Send feedback
, in which you can describe this issue.
In the mean time - if you double click the cell and copy the text rather than copying the whole cell, the typographical emphasis is kept in the same way - the text Normal Bold copies over to Gmail with only the word 'Bold' in bold.