Tooltip not working correctly after window resize and scrollablePlotArea must be enabled

[JoeyLi-1]

Expected behaviour

Tooltip works fine. Look like this.

Actual behaviour

Tooltip missing.

Live demo with steps to reproduce

Repo steps:
1 click button "small";
2 open console to force redrew;
3 minimize the console panel
4 click button “large”;
5 open console to force redrew;
6 minimize the console panel
7 you can see part of the tooltip disappeared.
(Seems only V-Scrollbar could cause this issue)

This demo is similar but not exactly same as our case. In our case, after resize the window, some of the tooltip disappear totally. And if
you set a positioner callback function, some tooltip will trigger that function while others don`t. The "top" property of the missing tooltip will be "-9999px".

Product version

v10.1.0

Affected browser(s)

I just tested it on chrome.

PS: I am new to JSFiddle, Just copy the code here in case the demo not working.
HTML:
`

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script src="https://code.highcharts.com/highcharts.js"></script>

Large Small `

JS:
function onLarge() { $('#container').css("height","400px") } function onSmall() { $('#container').css("height","190px") }

chart: {
type: 'spline',
scrollablePlotArea: {
minHeight: 200,
scrollPositionX: 1
}
},

I Just change a little bit of the official demo.
https://jsfiddle.net/gh/get/library/pure/highcharts/highcharts/tree/master/samples/highcharts/chart/scrollable-plotarea

Thank you for your time!

[karolkolodziej]

Thank you for reporting that issue.
Simplified demo: https://jsfiddle.net/BlackLabel/buqezt6n/

Internal note:
This condition in the tooltip refresh method is failing and resulting in hiding that tooltip.

highcharts/ts/Core/Tooltip.ts

Lines 1112 to 1117 in 0146821

	if (
	chart.polar ||
	currentSeries.options.clip === false ||
	points.some((p): boolean => // #16004
	p.series.shouldShowTooltip(checkX, checkY)
	)

The direct cause of that behavior is visible in isInsidePlot where incorrect scrollablePlotBox is taken.

We should investigate how the scrollablePlotBox is being set after reflow.

[karolkolodziej]

Edit:
Bisected to commit 9b58c8a
Works well in v9.0.1 and lower