bug(cdk-virtual-scroll-viewport): autosize miscalculates and adds a blank space after scroll list

[omeromeroglu]

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Is this a regression?

• [ ] Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

When we want to use a cdk-virtual-scroll-viewport with autosize feature for extendable list items we are having a blank space after the content. Blank space is not there when there are only a couple of items on the list however when we have a huge list it's possible to have it.

Reproduction

Steps to reproduce:

1. Have a list with and map some extendable card items in it.
2. Have a long list and scroll till the end. You will see there is a blank viewport at the end with no context.

Expected Behavior

No blank area after the content. autosize should stop expanding the viewport height after arriving at the last list item on the list.

Actual Behavior

blank area after the content and height changes after every up and down scroll.

Environment

• Angular: 13.2.4
• CDK/Material: 13.3.9
• Browser(s): Safari/ Chrome
• Operating System (e.g. Windows, macOS, Ubuntu): Windows/ macOS