Style for diagrams not loaded/imported

[LevashevIlia]

The problem is when I try to load style file to the layer, Symbology and Labels are changing, but Diagrams not. It also doesn`t work than I try by Processing Modeler. The only thing that works is than I copy style from one layer and paste it to another, thats how I can copy styles for diagrams.
How to Reproduce

data and style.zip

1. Go to Layer Properties
2. Click on 'Style->Load Style'
   
3. Choose all options
   
4. Click 'OK' and 'Apply'
   
   There is no style for diagrams, but in style file we can see the opposite
   

QGIS and OS versions

QGIS version
3.10.3-A Coruña
QGIS code revision
0e1f846
Compiled against Qt
5.11.2
Running against Qt
5.11.2
Compiled against GDAL/OGR
3.0.4
Running against GDAL/OGR
3.0.4
Compiled against GEOS
3.8.0-CAPI-1.13.1
Running against GEOS
3.8.0-CAPI-1.13.1
Compiled against SQLite
3.29.0
Running against SQLite
3.29.0
PostgreSQL Client Version
11.5
SpatiaLite Version
4.3.0
QWT Version
6.1.3
QScintilla2 Version
2.10.8
Compiled against PROJ
6.3.1
Running against PROJ
Rel. 6.3.1, February 10th, 2020
OS Version
Windows 10 (10.0)
Active python plugins
mmqgis;
ORStools;
Qgis2threejs;
qgis2web;
QuickOSM;
quick_map_services;
shapetools;
SpreadsheetLayers;
timemanager;
vector_tiles_reader;
db_manager;
MetaSearch;
processing

Additional context

[gioman]

@LevashevIlia were diagrams properties saved in the style file?

[LevashevIlia]

Yes, that's a problem ср, 25 мар. 2020 г., 17:54 Giovanni Manghi <notifications@github.com>:

…

@LevashevIlia <https://github.com/LevashevIlia> were diagrams properties *saved* in the style file? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#35343 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJIX7QN3DICDWOISV7YDIRTRJILL5ANCNFSM4LTQIROQ> .

[gioman]

@LevashevIlia does it happen only if the layer (where you are loading the style) is a geojson? or also other data sources?

[LevashevIlia]

It doesn't matter, i choosed geojson to minimise amount of files ср, 25 мар. 2020 г., 18:31 Giovanni Manghi <notifications@github.com>:

…

@LevashevIlia <https://github.com/LevashevIlia> does it happen only if the layer (where you are loading the style) is a geojson? or also other data sources? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#35343 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJIX7QPSPXGNFUJ7NOUHTMTRJIPUBANCNFSM4LTQIROQ> .