bug(mat-form-field): Incorrect display of long field label while not floating
- Dominant language
- TypeScript
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Description
### 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
There are apparently several issues with the display of long label text in form fields that are not floated as is apparent from the following screen shot:

This is the Stackblitz that the shot was taken from: https://stackblitz.com/edit/angular-m5oo6h
As you can see:
* The label is transformed out of the form field with outlined appearance and a prefix
* Ellipsis is not being applied with filled appearance and an input (while mat-select displays beautifully), no matter if a prefix is applied or not
### Reproduction
Steps to reproduce:
1. Use a form field with a long label
2. Add an element with matPrefix to that form field
### Expected Behavior
The label should be sized and ellipsized to fit the form field
### Actual Behavior
The label overflows the form field or is not ellipsized, depending on the details of the field configuration.
### Environment
- Angular: 15.0.3
- CDK/Material: 15.0.3
- Browser(s): Firefox 108, Chromium 108
- Operating System (e.g. Windows, macOS, Ubuntu): Fedora 38
Contributor guide
Research direction
Start by reproducing the long-label cases in the linked StackBlitz, covering outlined and filled appearances with prefixes and input or select controls. Trace the Angular Material form-field behavior involved and verify that labels fit within the field or are ellipsized consistently without overflowing.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- angular, typescript
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100