bug(table): Table with sticky header 'jumping'

[AntonEvseev]

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 scrolling, a table with a sticky header "jumps" if you add an element that has a absolute position. For example, if you display the tooltip and scroll, then the sticky header will change position for a short time.
This is also true with the mat-progress-bar element.

Reproduction

StackBlitz link:
Steps to reproduce:

1. Open link
2. The sticky header changes the position on scroll when there is another element on the page with absolute position

bandicam.2023-06-15.15-55-02-921.mp4

Expected Behavior

The sticky header should not change position on scroll when there is another element on the page with an absolute position

Actual Behavior

The sticky header changes the position on scroll when there is another element on the page with absolute position

Environment

• Angular: v12, v15, v16
• CDK/Material: v12, v15, v16
• Browser(s): Chrome Version 114.0.5735.110 (Official Build) (64-bit)
• Operating System (e.g. Windows, macOS, Ubuntu): Windows

[rahulbadekarr]

I am, also facing the same issue, do we have any option to handle this it will be very helpfull

[AntonEvseev]

@rahulbadekarr I temporarily set overflow hidden for table while mat-progress-bar is showing

[andrewseguin]

This seems to be an issue caused by the progress bar, perhaps the animations are causing its height to change. The sticky logic of the table just relies on the browser's implementation by using position: sticky.