timeline: pinch to zoom out zooms to an extreme when touch points get close

[scronay]

Seeing this in my downloaded code and on the example page:
https://visjs.github.io/vis-timeline/examples/timeline/basicUsage.html

Reproduce by touching and pinching slowly in on the timeline. At a certain point, when the touch points get close enough, the timeline will fly off to one direction and end on an extreme end of the time span.

I was able to replicate this on a Surface Pro 7 in Chrome & Edge, and on Android in Chrome.

Before zoom:

After zoom:

Additional info:

It appears that the initial distance of the touch points affects the distance at which the timeline flies away. For example, if I place a finger at the far end of each side of the timeline, the behavior begins when I get a little over 1/3rd of the way from either side towards the center.

[vis-bot]

🎉 This issue has been resolved in version 7.0.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀