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cortig
October 1, 2025
Solved

Electron framework leading to Tahoe slowdowns

  • October 1, 2025
  • 3 replies
  • 1074 views

Recent discussions have identified an issue with the electron framework leading to significant slowdowns in Mac OS 26 (Tahoe). 

You can see a good description of the problem here:https://mjtsai.com/blog/2025/09/30/electron-apps-causing-system-wide-lag-on-tahoe/

And this page offers scripts to identify apps that use the _cornerMask to draw drop shadows for windows in Electron apps (which triggers the slowdowns through WindowServer): https://gist.github.com/tkafka/e3eb63a5ec448e9be6701bfd1f1b1e58#file-detect-electron-apps-with-macos-lag-sh

I played around with he scripts and it looks like 1Password 8.11.12 is one of the affected Electron apps…

I'd be great to tweak the embedded framework (or use one of the newer, corrected frameworks) to eliminate the issue in 1Password :-)

    Best answer by 1P_SimonH

    Hi @cortig and @MitoWorld,

    This should be resolved in 1Password version 8.11.14 with the move to a newer version of Electron. Please let us know if you're still seeing performance issues.

    3 replies

    1P_SimonH
    1P_SimonH
    Community Manager
    October 1, 2025

    Hi @cortig 👋

    This is definitely on our radar and we'll be moving to a newer version of Electron! If you haven't already, I'd also recommend updating to Tahoe 26.0.1, as it fixes an autofill bug that was causing some performance issues.

      M
      MitoWorld
      October 3, 2025

      Looking forward for the fix soon! :) Thanks Simon!

      C
      cortigAuthor
      October 1, 2025

      Thanks for the information (and macOS is up to date on my Mac indeed).

      I just enabled nightly, bt it doesn't look like the present one incorporates the fix/workaround. It's still using _cornerMask in the Electron framework 37.3.1.

      I'll keep my eyes open for new builds though :-)

      1P_SimonH
      1P_SimonH
      Community Manager
      October 1, 2025

      Oops, sorry, @cortig! I think it hasn't actually hit the publicly-available nightly yet. I've updated my response so I don't throw off anyone else. We are working on this, though!

      1P_SimonH
      1P_SimonHAnswer
      Community Manager
      October 15, 2025

      Hi @cortig and @MitoWorld,

      This should be resolved in 1Password version 8.11.14 with the move to a newer version of Electron. Please let us know if you're still seeing performance issues.

      C
      cortigAuthor
      October 15, 2025

      Yep. It's using Electron 38.2.0 which doesn't have the issue. Thanks!

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