I have read through this thread. First of all, the Copilot app used should be Version 1.24112.133.0This is from MS Store and arrived/was released on 10 Jan. 2025.
If text is copied it will paste into the Copilot text messaging 'box' via Ctrl+V, not via Rt Clk.
One cannot C/P images. Those must use the Upload ImageThe above is in regard to (free) Copilot, not Copilot Pro. I cannot comment on Copilot Pro or differences it may have.
I cannot repro any inability to C/P text into the Copilot app.
Cheers,
Drew