Wow! What happened?
Wow! What happened?
There were more icons than the screen resolution. In the image, the one above the trash bin indicates they were removed from the list. With MATE or most other DEs, this problem wouldn’t occur—the program would have kept it in the taskbar, similar to Windows.
You're currently running on Linux, though I don't consider myself very proficient with it.
You haven't encountered any issues yet. Have you attempted to reinstall from a verified ISO, ensuring its MD5 matches the original?