Power Apps Attachment Missing In Flow

Hi , I am using a form with power apps attachment control. Attachment has validations. If user doesn't enter any attachment it shows the validation.

Here are the App details for attachment control in PowerApps

1.On Add File here is the syntax

2.When form is new mode ,we are using SubmitForm,While Updating the attachments we are using patch.I am using Form1.Updates to update the attachments.

When the user submit the record details with attachments , the record inserts into the lists and a flow will be triggered which will collect attachments based .But out of 10 records, only for 2 to 3 records, {has attachment =false} in the flow , even the power apps has validation. But the flow says , has attachment is false(Only 2 /3 out of 10 records, this issue is occurring)

Note: From App attachment is present , then the flow trigger starts and only for certain records sometimes the attachment is missing ( Has Attachment is false). Please help me with the possible solutions.