Easily be crashed

Is that only me or is that the software can easily be crash now? Just one delete in triplets, and suddenly jump out a weirdly really-short rest, and then when I tried to delete, it crash and all my work disappeared... And one more time that there are too much notes and too much accidentals in one bar, and then the notes went through the barline, and enter the space between pages, and then it crashed...

Is it now too easily to be crashed, or just some unaviodable problems?