MBarcode crashes quite often, after one or several barcodes were scanned and it is needed to scan one more.

VideoWidget::start(): Called with startEvenIfNotYetStarted = false and lensCoverOpen = true
VideoWidget::start(): Setting pipeline state
GST error: v412camsrc_calls.c(1558): gst_v412camsrc_grab_frame (): /Gst
Pipeline:test-camera/GstV412CamSrc:camera_src
readyAborted

Version: 0.2.2-4

EDIT: Steps to crash.
1. Start MBarcode;
2. Scan one barcode or several barcodes;
3. On a results page, lock the screen (make it black) by side slider or allow the screen to be locked automatically after some time;
4. Unlock the screen;
5. Click 'Back' on results page;
6. MBarcode crashes.