To see if you are on the infamous 2300363:
If you are on an older build (e.g., 23.0.0.301), you can update via Help > Update to reach this stable milestone. coreldraw graphics suite 2021 2300363
For brochure and booklet designers, the 2021 version revamped the multipage engine. Build 2300363 specifically fixed a memory leak that occurred when switching between 50+ page documents. Now, users can rearrange pages via a docker, duplicate pages with assets intact, and print spreads without manual adjustment. To see if you are on the infamous 2300363: