mailto links not working on Brave, when they are working on Chromium

Description

Mailto links are failing to open on Brave. When they are working fine on Chromium. Version 96.0.4664.110 (Official Build, ungoogled-chromium) (64-bit) Also copying the email with right-click copies the // in front of the email also. (Chromium copies the email with the “mailto://…” so it’s worse.)

Steps to Reproduce

1. Find a website that has mailto link(s) with or without something predefined for the body, or make one.
2. Right-click on the page and hit “Inspect”.
3. Left Click on the mailto link on Brave.
4. Look for a similar issue at the bottom of the inspect section, under console.
5. Open the same website on Chromium.
6. Click on the mailto link
7. Notice the difference.

Actual result:

Don’t get any new email opened.

Expected result:

A new email should open on my email client, with the info from the mailto link.

Reproduces how often:

Always

Brave version:

1.34.80 Chromium: 97.0.4692.71 (Official Build) (64-bit) adefa7837d02a07a604c1e6eff0b3a09422ab88d-refs/branch-heads/4692@{#1247} Windows 7 Service Pack 1 (Build 7601.23964) (An optimized version of Windows 7 Ultimate.)

Version/Channel Information:

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

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? Naw
• Does the issue resolve itself when disabling Brave Rewards? Unknown, not using Brave rewards
• Is the issue reproducible on the latest version of G. Chrome? Naw

Miscellaneous Information:

This site here doesn’t mention the // in front of the email address, though it works on Chromium and G. Chrome.

Thank you.

[rebron]

@btlechowski Can you check this one when you get a chance? Windows 7 specific issue?

[XilinJia]

I have the same problem on Ubuntu 20.04. After clicking on “mailto”, Brave pops up the window “Open with xdg-open”? I click button “Open xdg-open” and nothing happens.

I am using Xubuntu 22.04, so basically the same. After clicking “Open xdg-open”, brave opens thunderbird only showing the title bar with a blank window. This is when thunderbird is not opened. If however thunderbird app has been opened, then the correct send mail window is open with “Open xdg-open”. Chrome appears to do the same. Firefox on the other hand opens the correct thunderbird send mail window regardless.