Form tab option "Show as group box" won't save or apply

[SrNetoChan]

Describe the bug

In Layer properties, forms tab and in the drag and drop mode, the option "Show as group box" does not seem to be applied and saved every time.

How to Reproduce

1. Load a vector layer and open its properties
2. Go to the forms tab and select drag and drop mode
3. Add a new tab, give it a name
4. Put some fields inside the tab.
5. Back in the tab options, enable the "Show as group box" and "Show label" options
6. Click Ok (you can click apply before without any effect)
7. Open the layer properties and go back to the create tab options, confirm that the options are not enabled

A workaround that may indicate where the problem is:

8. Enable the options again.
9. Before clicking ok, select another field, then press ok

This way the options are saved.

QGIS and OS versions

QGIS version	3.10.9-A Coruña	QGIS code revision	bf47e9d
Compiled against Qt	5.9.5	Running against Qt	5.9.5
Compiled against GDAL/OGR	2.2.3	Running against GDAL/OGR	2.2.3
Compiled against GEOS	3.6.2-CAPI-1.10.2	Running against GEOS	3.7.1-CAPI-1.11.1 27a5e771
Compiled against SQLite	3.22.0	Running against SQLite	3.22.0
PostgreSQL Client Version	10.12 (Ubuntu 10.12-0ubuntu0.18.04.1)	SpatiaLite Version	4.3.0a
QWT Version	6.1.3	QScintilla2 Version	2.10.2
PROJ.4 Version	493
OS Version	Ubuntu 18.04.5 LTS
Active python plugins	Mergin; socarto_recart_tools; db_manager; processing

Additional context

[elpaso]

I cannot reproduce on current master:

[SrNetoChan]

@elpaso give me some time to try on master and latest LTR and stable versions.

[SrNetoChan]

@elpaso I have tried on the most recent version of QGIS 3.10 and it seems to be fixed. Closing this one. Thanks