Identifty tool does not work anymore on arcgis map services layers

[user2k]

Describe the bug
On "QGIS | 3.16.3-Hannover | 94ac9f2" identify tool (ctrl-shift-i) cant query object data from arcgis map services layer.
Same project on "QGIS | 3.14.16-Pi | df27394", working fine and identifing arcgis objects.

How to Reproduce

1. Open attached project in qgis 3.16.3

2. Ctrl-shift-i and then click on map gives nothing

3. Open attached project in qgis 3.14.16

4. Ctrl-shift-i and then click on map query arcgis world imaginery object and open identify dialog

QGIS and OS versions

Wersja QGIS	3.16.3-Hannover	Rewizja QGIS	94ac9f2
Skompilowane z Qt	5.11.2	Uruchomione z Qt	5.11.2
Skompilowane z GDAL/OGR	3.1.4	Uruchomione z GDAL/OGR	3.1.4
Skompilowane z GEOS	3.8.1-CAPI-1.13.3	Uruchomione z GEOS	3.8.1-CAPI-1.13.3
Skompilowane z SQLite	3.29.0	Uruchomione z SQLite	3.29.0
Wersja klienta PostgreSQL	11.5	Wersja SpatiaLite	4.3.0
Wersja QWT	6.1.3	Wersja QScintilla2	2.10.8
Skompilowane z PROJ	6.3.2	Uruchomione z PROJ	Rel. 6.3.2, May 1st, 2020
Wersja systemu operacyjnego	Windows 7 SP 1 (6.1)
Aktywne wtyczki Pythona	AnotherDXF2Shape; qfieldsync; quick_map_services; wyszukajdane; db_manager; MetaSearch; processing

Additional context

sample.zip

[gioman]

@user2k right... but the question is... what exactly is the identify tool returning (in QGIS < 3.16) considered that the layer is imagery? It seems to me that the returned info is always the same regardless of where I click.

[user2k]

@user2k right... but the question is... what exactly is the identify tool returning (in QGIS < 3.16) considered that the layer is imagery? It seems to me that the returned info is always the same regardless of where I click.

In this sample project there is one polygon with data from esri, i've made sample project with public layer, but i've got more complex data at work, and in 3.14 identify tool requests all features below cursor (as objects), and 3.16 does not.

update: i've checked, in sample project there are more polygons (and 3.14 identify all of them) attaching jpg

[roya0045]

So it fetches the tile data. Code was reworked, we'll have to see if the issue still stands in 3.18.

[gioman]

So it fetches the tile data. Code was reworked, we'll have to see if the issue still stands in 3.18.

@roya0045
it does not work on master.