Sometimes it would be useful to copy the text from an annotation field. The copy action could be made available from the context menu (right click).
Fixed in c764c995115fbcd3668a02ce1ce0950b5fb6c670 and 41aaa675bfd5e16b489c8087734e422a12846389 by allowing copying of annotations to both PRIMARY and CLIPBOARD (on X11), thanks! For reference: https://www.freedesktop.org/wiki/Specifications/ClipboardsWiki/