MacOS open behind Mail no longer working

[PeterOo]

In MacOS Mail app I can command click or under right click select 'open behind Mail' to open the link I click without bringing the browser window to the foreground. Nice when scanning newsletters.

This used to work fine with Firefox, but I noticed today it no longer works and Firefox is still coming to the foreground with Command-Click or the right click option. Updating to 159.0 (arch64) did not fix this.

Using safari as default browser it still works. 

Macbook Pro M4, Tahoe 26.7.1

[sara32]

I'm also having this issue.

[Waterfox-33]

Update: fixed for me in Firefox 160.0.

I had the same issue: in Apple Mail, “Open Link Behind Mail” (and Command-click) brought Firefox to the foreground instead of keeping Mail in front. It worked fine in earlier versions.

Setup:

• macOS 26.7.1 (25G241)
• Firefox 159.x (aarch64): bug present
• Firefox 160.0 (aarch64): bug gone, the link opens and Mail stays in the foreground

Nothing else changed on my side, so the fix appears to come from the Firefox update. I did not check the release notes, so I can’t say whether it was an intentional fix.

If you still have the problem, update to 160.0 via Firefox > About Firefox