Column Header Groups broken in 6.9.1

I’m creating this to track a new bug that I’m seeing in 6.9.1. I understand that there may not be fixes being added except from the community for 6.x, but wanted to track this for visibility for anyone else who encounters this.

I have a reproducible example, but will have to see if I can actually find the underlying cause in terms of trying to contribute a PR to fix this.

Describe the bug When using column header groups, a reference error is thrown:

i is not defined
makeHeaderGroups
../src/index.js:266:10

To Reproduce Here is a very simple failing example: https://codesandbox.io/s/p9xo6wrj8m

The header column with the nested columns is what causes the failure to occur. This previously worked in 6.8.6 and 6.9.0 (you can see this by flipping the version number back in the package.json in the example above).

Desktop (please complete the following information):

• OS: macOS Mojave
• Browser: Chrome
• Version: 71

[Android3000]

For the issue I mentioned, technically it works in 6.9.0, but that has some of its own other issues. 6.8.6 is probably what you want.

[tannerlinsley]

6.9.2 is out now. Hopefully it fixes this problem.