What version of ventoy are you running?

Have you tried with the latest release of Ventoy?

Have you tried alternative boot mode? (wimboot mode for Windows/WinPE, grub2 mode for linux)

In which BIOS mode did you find the bug?

Which partition style did you select when you install Ventoy?

What is the capacity of the disk installed with Ventoy?

What is the manufacturer of the disk installed with Ventoy? (e.g. SanDisk/Kingston...)

Have you checked the image file in Ventoy's menu as https://www.ventoy.net/en/faq.html#faq_boot_checksum ?

What is the image file download link?

Tell me what happened. It's highly recommended to include some photo or video about the bug.