selectFile from fixture will omit file name if used in two consequent tests

Current behavior

I have two tests uploading pdf file like this

cy.fixture('PDF/ThisIsTest.pdf', { encoding: null }).as('file')
    cy.get(personalDetails.tbModal.id).should('be.visible')
    cy.get(personalDetails.tbModal.fileInput).selectFile( '@file', { force: true })

If I run only one test it works fine, but if I run for example absolutely the same test twice (for example just by duplicating its code) then for the second test file is attached without name and endpoint returns error file not found. Workaround is to specify file name directly or use different fixure files and you can run as many tests as you want.

cy.fixture('PDF/ThisIsTest.pdf', { encoding: null }).as('file')
    cy.get(personalDetails.tbModal.id).should('be.visible')
    cy.get(personalDetails.tbModal.fileInput).selectFile({ contents: '@file', fileName: 'file.pdf' }, { force: true })

Desired behavior

It should be possible to just use the same fixture without specifying file name.

Test code to reproduce

cy.fixture('PDF/ThisIsTest.pdf', { encoding: null }).as('file')
    cy.get(personalDetails.tbModal.id).should('be.visible')
    cy.get(personalDetails.tbModal.fileInput).selectFile( '@file', { force: true })

Cypress Version

9.7.0

Other

No response

[BlueWinds]

From the opening post in this issue:

Workaround is to specify file name directly or use different fixure files and you can run as many tests as you want.

cy.fixture('PDF/ThisIsTest.pdf', { encoding: null }).as('file')
    cy.get(personalDetails.tbModal.id).should('be.visible')
    cy.get(personalDetails.tbModal.fileInput).selectFile({ contents: '@file', fileName: 'file.pdf' }, { force: true })

Specifying the file name explicitly always works.

[mschile]

I was able to reproduce the issue using the following test project: https://github.com/mschile/cypress-test-tiny-issue-21936.

/// <reference types="cypress" />
describe('page', () => {
  it('works', () => {
    cy.visit('/cypress/fixtures/index.html')

    cy.fixture('example.json', { encoding: null }).as('file')
    cy.get('#file').selectFile('@file')

    cy.get('#file')
      .then((input) => {
        expect(input[0].files.length).to.eq(1)
        expect(input[0].files[0].name).to.eq('example.json')
        expect(input[0].files[0].type).to.eq('application/json')
      })
  })

  it('works on subsequent test', () => {
    cy.visit('/cypress/fixtures/index.html')

    cy.fixture('example.json', { encoding: null }).as('file')
    cy.get('#file').selectFile('@file')

    cy.get('#file')
      .then((input) => {
        expect(input[0].files.length).to.eq(1)
        expect(input[0].files[0].name).to.eq('example.json')
        expect(input[0].files[0].type).to.eq('application/json')
      })
  })
})