Cannot read properties of null (reading 'setRoot')

[grassick]

Expected Behavior

Table should not cause exception when being unmounted

Current Behavior

Table sometimes (and I mean sometimes, seems to be a difficult to reproduce race condition) throws exception Cannot read properties of null (reading 'setRoot') in FixedDataTable in the _onRef function, as _wheelHandler is already null by the time it's called. This is because of componentWillUnmount being called before the div is de-refed.

Possible Solution

Check that this._wheelHandler isn't null

Steps to Reproduce (for bugs)

I really wish I could. It's been working fine for years in our code and just started blowing up today. I can't even get it to happen consistently on a repo.

Context

It makes our product crash. It's bad.

Your Environment

• Version used: 1.2.13
• Browser Name and version: Chrome Version 107.0.5304.121 (Official Build) (64-bit)
• Operating System and version (desktop or mobile): Linux
• Link to your project: N/A

[pradeepnschrodinger]

Thanks for brining the issue to our attention.

The NPE seen here comes from the changes made by #657 that I merged a couple of days back, which was (ironically) meant to fix a similar NPE.
I can reproduce the error consistently by mounting and then unmounting the table.

I'll take a look at the PR, thanks!

[pradeepnschrodinger]

The NPE seen here comes from the changes made by #657 that I merged a couple of days back

Nvm, this is only partially true. The issue always existed before #657, although it was only seen when stopReactWheelPropagation is set to true.
#657 has just brought the error up consistently on unmounting regardless of the value for stopReactWheelPropagation.

[pradeepnschrodinger]

The fix for this is available on v1.2.14, through #664.

[pradeepnschrodinger]

I'm closing this off since the issue is resolved, but feel free to comment/reopen if you need any help or have any questions.