5.5.1 Recording interrupted

It happened a couple of time that Oruxmaps stopped the recording of a track after about ah hour and half. When I arrived at the end of my ride, I extracted the mobile from the pocket to stop manually the recording, but when I removed the sreen lock, Oruxmaps gave the message: "Track recordering is resuming" or something similar, I don't remember exactly. I have lost the big part of my ride, of course: five hours of cycling and just 90 minutes of recording.

This never happened before: could it be a bug or a new function that wants me to make some "tuning" to have it working correctly?

I was using ANT+ sensor, barometer for altitude and there was the live tracking on mapmytracks active. The device is a Sony Xperia Active.

If I can provide some log, please let me know where I can find them.