bug: collapsible large title should snap between expanded and collapsed when released in between states

[EinfachHans]

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Bug Report

Ionic version:

[ ] 4.x [x] 5.x

Current behavior:

Currently, the ios large (collapse) header is able to be between the two states when releasing the pointer via scroll. It then looks like:

Expected behavior:

As far as i see, native it switches either to the expanded or collapsed state, determined by how far the transition was done when releasing.

[ionitron-bot[bot]]

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[ionitron-bot[bot]]

Thanks for the issue! This issue has been labeled as needs reproduction. This label is added to issues that need a code reproduction.

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[EinfachHans]

Github Repo: https://github.com/EinfachHans/ionic-collapsable-header

Just the starter Repo with a List to make the content scrollable. Here an image of how it can look after releasing the finger:

[ionitron-bot[bot]]

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[ocarreterom]

I made a first attempt to this feature. https://github.com/ionic-team/ionic-framework/pull/22737