Inconsistent colour in text editor


I’ve just installed the “seti” UI theme as well as the “monokai” text highlight theme but there seem to be a box around the text with a different colour than the editor’s background. I’ve attached the screenshots below. This also happens with different UI and text highlighting themes except for the default dark and light Atom themes. Does anyone know what might fix this?

monokai text highlighting theme


This is a bug in Chromium that results from the interaction between Sierra, your monitor, and the GPU settings in the app. Here’s the FAQ entry about it: