Bug (low prio): Firefox in developer mode: Rejected cookie

**Describe the bug**

When using the firefox cellphone-screen-size developer mode, my cookie is rejected and I am logged out automatically.

- The same steps in Chromium do **not** lead to any error.... Firefox' quality is really declining fast.....
- On Firefox on a real cellphone this error also does **not** occur
- Maybe this is a Firefox bug?
- I am opening the issue here, just in case it is a symptom of a Specter problem occurring also in other situations.

**To Reproduce**
Steps to reproduce the behavior:
1. Firefox --> Right click --> Inspect Website (For developers) --> Cellphone Screen 
2. Make screen size **very** narrow (Galaxy S10) (the error does **not** occur if the screen size is wide)
3. Go to `/wallets/wallet/seg/send/new`
4. Enter any bitcoin address in the recipient 1 field

**Desktop (please complete the following information):**
- linux, regtest
- Firefox 103.0.1 (64-bit)
- Specter Version: master

Reproduce the issue in Firefox 103.0.1 using the very narrow Galaxy S10 developer-mode viewport, then compare it with Chromium and a real cellphone. Start at /wallets/wallet/seg/send/new and trace what happens to the login cookie when entering a Bitcoin address; done means the cookie is accepted and the user remains logged in.

Written by the indexing model from the issue text.