One new information, now running version 6.1.0.157. Same problem with version 4.4.0.106. Logs screenshots show the difference. The problem occurs only with models B5G124, same firmware
version.
I believe I've run into this issue. It is supposed to be fixed in 5.1.153 -
Corrected an issue that prevented the ctAlias Compass search from working correctly on some versions of Stackable firmware.