Fatal callback error with multiple report generations / notifications

[liza-mae]

Kibana version: 6.3.0 BC6
Elasticsearch version: 6.3.0 BC6
Server OS version: OSX
Browser version: Chrome / Firefox
Browser OS version: Latest
Original install method (e.g. download page, yum, from source, etc.): Staging

Describe the bug:
Generating several reports at the same time can cause a fatal error to occur. It is not consistent in reproducing but I do see it happening multiple times. Since I see ToastList in the error message I believe this is to do with the notifications being generated by initiating multiple reports.

Error: Uncaught TypeError: _this.callback is not a function (https://localhost:5605/bundles/vendors.bundle.js:149)
    at window.onerror (commons.bundle.js:3)
fatalError @ commons.bundle.js:3
window.onerror @ commons.bundle.js:3
setTimeout (async)
Timer.resume @ vendors.bundle.js:149
EuiGlobalToastList._this.onMouseLeave @ vendors.bundle.js:149
vendors.bundle.js:149 Uncaught TypeError: _this.callback is not a function
    at Timer.finish (vendors.bundle.js:149)
Timer.finish @ vendors.bundle.js:149
setTimeout (async)
Timer.resume @ vendors.bundle.js:149
EuiGlobalToastList._this.onMouseLeave @ vendors.bundle.js:149
commons.bundle.js:3 Uncaught Error: Uncaught TypeError: _this.callback is not a function (https://localhost:5605/bundles/vendors.bundle.js:149)
    at window.onerror (commons.bundle.js:3)
window.onerror @ commons.bundle.js:3
setTimeout (async)
Timer.resume @ vendors.bundle.js:149
EuiGlobalToastList._this.onMouseLeave @ vendors.bundle.js:149
commons.bundle.js:3 Error: Uncaught TypeError: _this.callback is not a function (https://localhost:5605/bundles/vendors.bundle.js:149)
    at window.onerror (commons.bundle.js:3)
fatalError @ commons.bundle.js:3
window.onerror @ commons.bundle.js:3
setTimeout (async)
Timer.resume @ vendors.bundle.js:149
EuiGlobalToastList._this.onMouseLeave @ vendors.bundle.js:149
vendors.bundle.js:149 Uncaught TypeError: _this.callback is not a function
    at Timer.finish (vendors.bundle.js:149)
Timer.finish @ vendors.bundle.js:149
setTimeout (async)
Timer.resume @ vendors.bundle.js:149
EuiGlobalToastList._this.onMouseLeave @ vendors.bundle.js:149
commons.bundle.js:3 Uncaught Error: Uncaught TypeError: _this.callback is not a function (https://localhost:5605/bundles/vendors.bundle.js:149)
    at window.onerror (commons.bundle.js:3)
window.onerror @ commons.bundle.js:3
setTimeout (async)
Timer.resume @ vendors.bundle.js:149
EuiGlobalToastList._this.onMouseLeave @ vendors.bundle.js:149

Steps to reproduce:

Install Elasticsearch, Kibana
Generate multiple reports, continue navigating in kibana
Sometimes while looking at one report in a tab or just navigating back to the report page a fatal error occurs.

[stacey-gammon]

cc @elastic/kibana-design since it seems to be coming from the EUIGlobalToastList code.

[stacey-gammon]

This isn't related to reporting, I was able to trigger by moving my mouse around the toasts that were generated from add panel action.

I think it has to do with the timer.resume starting up a dismissed toast.

Not sure why reporting toasts do seem to trigger it more quickly though.

[chandlerprall]

I can replicate in the Toast docs, definitely something internal to EUI.

[chandlerprall]

not solved in kibana yet, re-opening

[chandlerprall]

Is this really a blocker for 6.3? In a psuedo-related conversation with @timroes he said our current backporting policy says we only backport critical security issues to 6.3

[liza-mae]

When running multiple report generation tasks in the background, which is probably a common use case, this fatal error can occur multiple times at random times. So it will interrupt any other work that is being done in the browser. Since this is new functionality that did not exist in 6.2.4, in this scenario it will cause the system to act flaky and it should be fixed in 6.3.0. It negatively impacts the user experience and could possibly result in work loss, this is why we decided it should be a blocker.

[nreese]

closed by #19361