'REMEMBER_COOKIE_HTTPONLY' causes "The CSRF tokens do not match" on mobile Firefox

[Lvl4Sword]

I've noticed that when enabling 'REMEMBER_COOKIE_HTTPONLY' within the config dict, it causes "The CSRF tokens do not match" in a POST request specifically for mobile Firefox. ~~Non-mobile works just fine, as does Chromium.~~ Those appear to also be affected.

1. Set 'REMEMBER_COOKIE_HTTPONLY' within the config dict
2. Go to a page that has a CSRF token and do a post request
3. It fails with a "The CSRF tokens do not match"

The POST request should complete just fine

Environment:

• Python version: 3.8.10
• Flask-WTF version: 1.0.1
• Flask version: 2.1.2

[DarkRedman]

I've a similar issue when enabling 'SESSION_COOKIE_SECURE' (even if using http) from a client in the LAN, but working from localhost client)

Environment:

Python version: 3.11.15 Flask-WTF version: 1.1.1 Flask version: 2.3.3