How to copy Request Payload in Chrome on Mac?
Came to your question having the same problem.
My solution: Select the text with your mouse pointer and make sure you are not selecting more than the whole content, then try again.
I was selecting more than the contents by triple clicking it and it wouldn't let me copy, probably a bug in chrome.
- Click on Network tab, click on item you are concerned with in the Name column.
- Click on the payload content so that it highlights it in blue.
- Click and drag mouse over content you want to copy, then ctl+c or right click -> copy
you can switch between view-source and view-parsed. They are clickable options.