Vector data - Graduated Symbology - Legend Format - Only use upper limit

[fmeier1995]

What is the bug or the crash?

I'm not sure if this is a bug report or a feature request, but I guess the first.

I like to use a graduated symbology for some vector data.
Let's say my classes are 1-10, 11-20, 21-30, ...
My legend should only show the upper limit for each class.
The option "Legend Format" says I should use "%1" for the lower limit and "%2" for the upper limit.
So I thought when I write "< %2" my legend should be filled with "< 10", "< 20", "< 30", ...
Instead it is filled with "< 1", "< 11", "< 21", ... - the lower limit.

I tried with different data sources (Shape, GPKG, PostGIS) and it also doesn't matter if the attribute is integer or double.

Steps to reproduce the issue

1. Load any vector data with at least one attribute which contains numbers.
2. Create a graduated symbology
3. Change "Legend Format" to something with "%2" (without "%1") and look into the legend

Versions

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QGIS-Version	3.22.15-Białowieża	QGIS-Codeversion	ef17ad1
Qt-Version	5.15.3
Python-Version	3.9.5
GDAL-Version	3.6.2
PROJ-Version	9.1.1
EPSG-Registraturdatenbankversion	v10.076 (2022-08-31)
GEOS-Version	3.11.1-CAPI-1.17.1
SQLite-Version	3.39.4
PDAL-Version	2.4.3
PostgreSQL-Client-Version	14.3
SpatiaLite-Version	5.0.1
QWT-Version	6.1.6
QScintilla2-Version	2.13.1
BS-Version	Windows 10 Version 2009
Aktive Python-Erweiterungen
db_manager	0.1.20
grassprovider	2.12.99
MetaSearch	0.3.5
processing	2.12.99
sagaprovider	2.12.99
GeoCoding	2.18
quick_map_services	0.19.32
SpreadsheetLayers	2.0.1
QPackage	1.5
DissolveWithStats	0.6
qchainage	3.0.1
autoSaver	2.6

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