When running the lowenergyscanner example application or the tst_qlowenergycontroller_device test (both are BT LE Clients), they find the Linux "bluetoothtestdevice" server but fail to find any services. Running against eg. macOS or Android server works ok.

The initial guess is that there is a stack disconnection early on and this is potentially related to QTBUG-99035 (but here the client <=> server roles are reversed).