Changes on form are not apply by default

[lucienicolier]

What is the bug or the crash?

When making changes to attributes via Parameters > Form, the changes are not applied unless the Apply button is explicitly clicked. This issue occurs even if the form is not closed. For example, if changes are made and the user navigates to the next attribute without clicking Apply, the changes are lost when returning to the previous attribute.

Steps to reproduce the issue

1. Open the Parameters > Form dialog.
2. Make changes, such as:

• Adding a list.
• Enabling the Reuse last entered value option.

3. Navigate to a different attribute without clicking Apply.
4. Return to the original attribute and observe that the changes are lost.

Versions

<style type="text/css"> p, li { white-space: pre-wrap; } </style>

QGIS version	3.40.2-Bratislava
QGIS code revision	14826ca
Libraries
Qt version	5.15.13
Python version	3.12.8
GDAL/OGR version	3.9.3
PROJ version	9.5.0
EPSG Registry database version	v11.016 (2024-08-31)
GEOS version	3.13.0-CAPI-1.19.0
SQLite version	3.46.1
PDAL version	2.8.1
PostgreSQL client version	16.2
SpatiaLite version	5.1.0
QWT version	6.3.0
QScintilla2 version	2.14.1
OS version	Windows 11 Version 2009
Active Python plugins
Qgis2threejs	2.7.3
db_manager	0.1.20
grassprovider	2.12.99
MetaSearch	0.3.6
processing	2.12.99

QGIS version 3.40.2-Bratislava QGIS code revision [14826ca](https://github.com/qgis/QGIS/commit/14826ca1)

Libraries
Qt version
5.15.13
Python version
3.12.8
GDAL/OGR version
3.9.3
PROJ version
9.5.0
EPSG Registry database version
v11.016 (2024-08-31)
GEOS version
3.13.0-CAPI-1.19.0
SQLite version
3.46.1
PDAL version
2.8.1
PostgreSQL client version
16.2
SpatiaLite version
5.1.0
QWT version
6.3.0
QScintilla2 version
2.14.1
OS version
Windows 11 Version 2009

Active Python plugins
Qgis2threejs
2.7.3
db_manager
0.1.20
grassprovider
2.12.99
MetaSearch
0.3.6
processing
2.12.99

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response

[nirvn]

Looking into it