Environment

System:

• OS: macOS 10.15.2
• CPU: (8) x64 Intel(R) Core(TM) i7-8559U CPU @ 2.70GHz
• Memory: 1.12 GB / 16.00 GB
• Shell: 5.7.1 - /bin/zsh

Binaries:

• Node: 13.7.0 - ~/.asdf/installs/nodejs/13.7.0/bin/node
• Yarn: 1.21.1 - ~/.asdf/installs/nodejs/13.7.0/.npm/bin/yarn
• npm: 6.13.6 - ~/.asdf/installs/nodejs/13.7.0/bin/npm

npmPackages:

• babel-plugin-styled-components: ^1.10.7 => 1.10.7
• styled-components: ^5.0.0 => 5.0.0

Reproduction

v5.0.0: https://codesandbox.io/s/thirsty-kalam-hi5s8
v4.4.1: https://codesandbox.io/s/strange-mendeleev-pindz

Steps to reproduce

1. Create a global stylesheet using an attribute selector to set some styles.
2. Try to overwrite those styles on a component

Expected Behavior

The global styles are overwritten by the component styles, as in v4.4.1

Actual Behavior

The component styles are overwritten