Emacs flickers/flashes when typing or scrolling.

[carloscheddar]

Description

Emacs flickers/flashes when typing or scrolling on all modes.

Reproduction guide 🪲

• Start Emacs
• Scroll or type
• Keep scrolling/typing until screen flashes

Observed behaviour: 👀 💔
Emacs flickers/flashes.

Expected behaviour: ❤️ 😄
Emacs shouldn't flicker/flash.

System Info 💻

• OS: darwin
• Emacs: 26.1
• Spacemacs: 0.300.0
• Spacemacs branch: develop (rev. 4b195dd)
• Graphic display: t
• Distribution: spacemacs
• Editing style: vim
• Completion: helm
• Layers:

(python react sql
        (helm :variables helm-use-frame-when-more-than-two-windows nil)
        auto-completion emacs-lisp
        (osx :variables osx-use-option-as-meta nil)
        git html
        (markdown :variables markdown-live-preview-engine 'vmd)
        ruby org javascript coffeescript yaml themes-megapack scala csv syntax-checking version-control emoji)

• System configuration features: JPEG RSVG IMAGEMAGICK NOTIFY ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS MODULES THREADS LCMS2

Backtrace 🐾

No error seems to be showing even with debug-on-error enabled.

[carloscheddar]

I fixed this issue by using another port of emacs. Instead of emacs-plus I installed emacs from homebrew cask with brew cask install emacs.

[conorfoley]

I had this same issue, and it was only resolved by installing this specific port: https://github.com/railwaycat/homebrew-emacsmacport

[xiaozhu1337]

I had this same issue, and it was only resolved by installing this specific port: https://github.com/railwaycat/homebrew-emacsmacport

best solution.