AI displays the START SCREEN on opening the file and the document view do not switches (refreshes) the file content.
We have created this thread to investigate . If you are encountering the below mentioned issues with latest Version (24.0.1 on Mac and Win), then please vote on this User voice thread and provide Test File via File->Package, Video and steps via dropping email at sharewithai@adobe.com along with this thread link so that we can identify and fix the root cause.
- On opening a file in Illustrator the START SCREEN do not gets dismissed and the file’s content is not visible.
- While working on a file and opening a new one the document view sticks to the old file and do not switches to the new file artwork.
Please remember to update graphic driver. We are also seeing cases where updating graphic card driver fixes the issue. You can update your driver via https://helpx.adobe.com/illustrator/kb/illustrator-gpu-performance-driver-update.html .

Hi,
Thank you all for reporting this issue and providing us your valuable feedback.
Kindly help Illustrator Team to nail this issue down further:
1)Kindly provide video ,Test Steps or File via File→Package with which you are still facing this issue and share with us at ShareWithAI@adobe.com in a Zip file. Please mention the title of this issue as the subject of the mail.
Please remember to update graphic driver. We are also seeing cases where updating graphic card driver fixes the issue. You can update your driver via https://helpx.adobe.com/illustrator/kb/illustrator-gpu-performance-driver-update.html .
Thanks and Regards
Ankit Goyal
Illustrator Team