I want to change the formatting of the flow header for all parts, but when I open the default flow heading master it is empty and I cannot draw any frames (I select the text frame button, the cursor changes to a crosshair, but when I drag nothing happens and the cursor reverts to normal). The preview in the panel shows a green frame, but when I double click it gives me the empty layout. Interestingly, flow headers appear in the part, but if I create a new default master they disappear and I can’t edit that master either.
Additionally, in the part master pages I can modify the existing frames but I cannot draw new text frames.
Dorico 2.2 Windows 10