Preserve Whitespace in Brave Wallet Signing Message Text

[devstein]

Description

Hi 👋 , first of all I've switched to Brave a few months ago from Chrome and absolutely love it.

I'm working on a wallet-based OAuth 2.0 compatible identity provider, called Picket, and as part of the authentication flow the user signs a custom message with an appended random nonce. User's want the custom messaging to be readable and friendly (signing a message is scary!) and typically include whitespace in the message. Unfortunately Brave Wallet, unlike Metamask and Rainbow, does not preserve whitespace.

Steps to Reproduce

In a Brave Browser,

1. Login to your wallet
2. Connect your wallet to ETH JS library, like ether.js
3. Sign a message with whitespace

const message = `
Hi,

this has whitespace.

please sign it!
`

await signer.signMessage(nonce);

Actual result:

Whitespace is not preserved:

Expected result:

Whitespace is not preserved, like in Metamask:

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

1.38.109 Chromium: 101.0.4951.41 (Official Build) (x86_64)

Version/Channel Information:

• Can you reproduce this issue with the current release?
• Can you reproduce this issue with the beta channel?
• Can you reproduce this issue with the nightly channel?

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? N/A
• Does the issue resolve itself when disabling Brave Rewards? N/A
• Is the issue reproducible on the latest version of Chrome? N/A

Miscellaneous Information:

[srirambv]

Brave	1.41.82 Chromium: 103.0.5060.66 (Official Build) beta (64-bit)
Revision	20b1569438a85e631d15e83eb355e3e326e5da6f-refs/branch-heads/5060@{#1066}
OS	☑️ Linux	☑️ Windows 11 Version 21H2 (Build 22000.708)	☑️ macOS Version 12.0.1 (Build 21C52)
Verified steps from issue description Verified whitespace is preserved on sign messages