[Bug]: External WFS layer doesn't display properly

[mfangain]

What is the bug?

I see problems displaying wfs layers from external servers in Lizmap. There is no problem with the wms layers.
The display on the map is unstable: depending on zoom factors or moves, objects display or hide randomly, while there is no restriction on scales at the layer style, or at the wfs layer level.

The objects look loaded, but there is no information accessible from the attribute table.
And so categorized style doesn't work on Lizmap.

Everything is ok in QGIS desktop.

Steps to reproduce the issue

1. Add a wfs layer in QGIS project (I tried different sources : open data from Rennes Métropole for example)
2. Set the differents parameters (including project properties and Lizmap plugin)
3. Publish the project
4. display the layer in Lizmap

Versions

Lizmap 3.4.9 (on 3Liz server)
QGIS 3.10

QGIS server version, only if the section above doesn't mention the QGIS Server version

No response

Operating system

Server 3Liz

Browsers

Firefox, Chrome

Browsers version

Firefox 91.6, Chrome 98

Relevant log output

In the development tools, there's no error message and the Lizmap error log remains empty.

[mfangain]

Hi,

The problem is still there in Lizmap version 3.5.4.
And it's really annoying.
Does anyone have got an idea about this problem?

Thanks a lot!

mfangain