<!-- Hi there! Thank you for discovering and submitting an issue. Before you submit this; let's make sure of a few things. Please make sure the following boxes are ticked if they are correct. If not, please try and fulfill these first. --> - [x] I am on the [latest](https://github.com/zeit/hyper/releases/latest) Hyper.app version - [x] I have searched the [issues](https://github.com/zeit/hyper/issues) of this repo and believe that this is not a duplicate <!-- Once those are done, if you're able to fill in the following list with your information, it'd be very helpful to whoever handles the issue. --> - **OS version and name**: Ubuntu 16.04 - **Hyper.app version**: Hyper 1.3 - **Link of a [Gist](https://gist.github.com/) with the contents of your .hyper.js**: https://gist.github.com/telmen/3ab5f895b0b4134029724f78ba08bff7 - **Relevant information from devtools** _(CMD+ALT+I on Mac OS, CTRL+SHIFT+I elsewhere)_: <!-- Replace with info if applicable, or N/A --> - **The issue is reproducible in vanilla Hyper.app**: <!-- Replace with info if applicable, or `Is Vanilla`. (Vanilla means Hyper.app without any add-ons or extras. Straight out of the box.) --> ## Issue <!-- Now feel free to write your issue, but please be descriptive! Thanks again 🙌 ❤️ --> Vibrancy or opacity not working on linux at all,  any suggestion?