Overview:
The user cannot see the Remove action for some customized types of submission.
Root Cause:
This may occur when the Remove action is not set for these types of submission.
Solution:
Vault Owner or System Admin goes to Admin->Coniguration->Objects->Submission->Object Types->Actions and click the Edit Object Type Actions action, then tick the Remove action and Save the result.
The end-user confirms if he can see the Remove button.
Related Documentation:
N/A