[BUG] On iOS, RTAB-Map crashes after pressing "stop" button in data recording mode

[ser94mor]

From my experience, in 95% of cases of data collection sessions in data recording mode, I observe RTAB-Map app crashes after pressing the "stop" button.

The iPhone is configured to record data at maximum frequency.

This behaviour is observed on both iPhone 15 Pro and iPhone 12 mini.

[ANOTHER BUG]
If the iPhone battery level is slightly higher than 20%, one starts a data collection session in data recording mode, and then the battery level drops below 20%, iPhone displays a pop up window suggesting to put iPhone into the Power Saving mode, which, in turn, triggers RTAB-Map app crash. Would be good if the RTAB-Map app didn't stop data recording when pop up windows appear.

Both issues are observed on the RTAB-Map iOS 0.21.8 app installed from AppStore.