Doing a book, and dynamic master page numbers set in master pages. When the book reached page 100 (three-digit number) left page show three-digit number fine, but the right page number on every right-side page is so squished as to be unreadable. On the master page, I deleted and reinserted a dynamic page number, giving it ample room, but no help. I formatted the dynamic page on the master page right, middle and left justified paragraph, all made no difference. I'm lost. Any ideas.
Sorry to hear about your experience. We have just released Adobe InDesign 2021 (v16.1) which includes the fix for this issue.
Please update your app to the latest version & see if it helps with your concern. Let us know how it goes.