1718063 - <form method=post> in HTTP-only site make GET request when private browsing

Status: RESOLVED INVALID

(Firefox :: Private Browsing, defect)

Description

[heguro]

Steps to reproduce:

1. Start private browsing
2. Open HTTP-only site that contains <form method="post"> (quick example: http://12hourssleep.webcrow.jp/2021/20210624_firefox_bug/ )
3. Submit form

Actual results:

4. Firefox tries to send POST request to https:// URL
5. Firefox sends GET request to http:// URL, with no query

Turn on "Persist Logs" in network inspector to see step 4 request.

Expected results (1):

4. Firefox sends POST request to http:// URL

Expected results (2):

4. Firefox tries to send POST request to https:// URL
5. Firefox sends POST request to http:// URL

Can reproduce in

• Firefox Nightly for Windows 91.0a1 (20210623214552) (64bit)
  • Windows 10 Pro 21H1, Build 19043.1052
• Firefox Nightly for Android 91.0a1 (Build #2015818075 / AC: 91.0.20210623143047, f8a5c6a05a / GV: 91.0a1-20210623095324 / AS: 79.0.0 / 2021-06-23T19:23:54.452)
  • Android 10 (Umidigi S5 Pro)
  • Android 8 (Samsung Galaxy S7 Edge)

Cannot reproduce in

• Firefox Developer Edition for Windows 90.0b11 (64bit)
• Firefox for Windows 89.0.2 (64bit)
• Firefox Beta for Android 90.0.0-beta.5
• Firefox for Android 89.1.1

Comment 1

[Jeronimo Torti (Please send NI request to Brindusa Tot)]

Hi heguro,
I was able to reproduce this issue in Windows 10, using Nightly 91.0a1 (2021-06-27) (64-bit), not on Release 89.0.2 (64-bit) versions. I could reproduce it as described in provided steps, only on Private window, as reported.

I marked as New for visibility, in order to get the dev team involved.
If it's not relevant, 'Firefox-Private Browsing', please feel free to change the component if this is not the appropriate one.

Regards,
Jerónimo.

Comment 2

[heguro]

Cannot reproduce in latest Firefox, so I closing