Under MacOS 26 TAHOO: Giant lag at Electron apps

MacOS 26 alias Tahoe users complain about system braking in connection with certain apps. The reason is apparently an incompatibility of the operating system with the Electron frameworkuse the known applications such as Discord or VS Code. There you apparently use an override hack of a private app kit API to generate certain window effects. This in turn collides with MacOS 26 and the implementation of the Windowserver tasks, which is responsible for the MacOS window presentation, it is said In the Github forum of the Electron project.

Rest dispute between Electron and MacOS 26

A fix within Electron is already available: it is in the versions V39.0.0-Alpha.7, V38.2.0, V37.6.0 and V36.9.2. However, developers still have to update the framework for themselves, which can take a few days – if they are aware of the problem at all. In practice, the mistake means that it is sufficient that an electron app runs and has not been minimized. It can slow down the whole system itself on a quickly Apple-Silicon-Max chip. At first it seems that the CPU and GPU load is low, but a redraw behavior of windows servers ensures that the graphics kernels are now being busy. This should be noted by slow scrolling.

If several electron apps are open, it gets worse. If chrome is open and an electron app is minimized, the problem seems to be done It said on Hacker Newslike developer Michael Tsai In his blog summarize. Electron seems to try to use so-called Custom Corner masks in vibrant views, which in turn do not like the new Windowserver in Tao-he tries to re-generate them. Apple had designed the edges in Tahoe significantly more runder.

Password problem in Electron in MacOS 26.0.1 fixed

Apple had also released MacOS 26.0.1 this week, which delivers some error loans. According to information from Ricky Mondella There is further error correction in connection with electron apps and chromium browsers: A bug in the AutoFill area should no longer occur.

This too could slow down apps because event taps false. Autofill is used to fill out passwords. Apple has details on the feature for developers In his own documentary for Developer on.