Hi @Gabriel5E9E,
Thanks for reaching out and sharing these screenshots. I can imagine how worrying it must be to see your reference images suddenly missing after an update.
When you paste screenshots or images directly into Illustrator, they are embedded in the file. Sometimes, after an update, certain embedded images can appear as missing or just show as outlines if there is a display glitch or corruption in the file.
Could you please let me know your macOS version and confirm whether this issue is happening in all files or just this specific one? Also, if possible, try creating a new test file and paste a few new screenshots to see if they display correctly.
In addition, please try disabling GPU Performance in Illustrator Preferences > Performance and check if the images reappear. You can also try enabling Overprint Preview from the View menu as this sometimes forces a more accurate rendering of objects that may not be displaying properly.
Looking forward to your update!
Abhishek