I used to draw a picture box on my master page and then insert a multi page PDF by choosing place and all pages. I can no longer place a multi page PDF using the master page picture window. Does anyone know why?
see into my bug report at InDesign UserVoice and vote for fixing the issue:
Place multi-page PDF pages: Place Gun will be unloaded after first page is placed to a frame Uwe Laubender, Mar 28, 2022
New bug with InDesign 17.2 that I cannot see with InDesign 17.1.  Load multiple PDF pages from a multi-page PDF to the place gun.  Hover the loaded cursor over a graphic frame to place the first page in that frame  Click to place the first page.
Result: The first page is placed to the frame
BUG: The rest of the loaded PDF pages in the place gun are unloaded. The place gun is empty after you placed the first of several pages to a frame.