Dmitry K.
https://tools.ietf.org/html/rfc7946#appendix-A.3Bounding Box
A GeoJSON object MAY have a member named "bbox" to include
information on the coordinate range for its Geometries, Features, or
FeatureCollections. The value of the bbox member MUST be an array of
length 2*n where n is the number of dimensions represented in the
contained geometries, with all axes of the most southwesterly point
followed by all axes of the more northeasterly point. The axes order
of a bbox follows the axes order of geometries.
In your case Bounding Box most southwesterly point = northeasterly point
(request =
<WSGIRequest: GET '/inv/inv/plugin/map/layers/pop_links4/?bbox=44.19937133789063,10.950629939379114,44.19937133789063,10.950629939379114,EPSG%3A4326&_dc=1602340137819'>)
maybe this is the case ?