Slow Running tests when window doesn't have focus

Not sure it it is a bug, or a misunderstanding from mine.

Current behavior:

When testing a MaterialUI component, I got some trouble with hot reloading. If I refresh my browser with F5, my code behaves correctly:

Yet, if test is relaunched using hot reload, select list takes a long time before closing:

Desired behavior:

I would expect the behavior to be the same between fresh refresh or hot reload.

Steps to reproduce:

I created a repository to reproduce the issue: https://github.com/jpetitcolas/cypress-bug

Clone it, then launch the React app and open Cypress:

git clone https://github.com/jpetitcolas/cypress-bug.git
npm install
npm start

# in another term
npm run cypress

Then, comment or uncomment the following line to let browser to hot reload.

Versions

• Cypress: 3.0.1
• OS: Linux Mint 18
• Chrome: Version 66.0.3359.139 (Official Build) (64-bit)

[brian-mann]

@jbinto we’re actually aware of the root issue and have already fixed it in a local branch. This will get released with the next patch update.

[agualis]

Could this issue be related with this?